[CSBE]

We're on our second set of the Continental DWS06+ 's. I've used them on several cars Volvo XC70, GTI, GLI and have had decent performance. The current set are rated 105W front and 107W rear

 

[Rusty Rotors]

Also - what are you looking at for speed ratings?

265/45R20 front is 104Y LI/SR.
295/40R20 rear is 110W LI/SR.

The OE placard is:
F:104Y
R:106Y

TireRack wont sell you the rear because of the Y OE rating (speed rating defined by manufacture in excess of 186 mph). W is 168 mph by-the-way. Neither relevant, pretty sure the Macan top speed is 162....

From the LOAD carrying - they meet and exceed. That is far more important here.

Add them to cart individually. Don't add car info.

https://www.anrdoezrs.net/click-100...21&autoModel=Macan%20GTS&autoModClar=&frontTire=645YR0DWS06P&i1_Qty=2&tab=Sizes

https://www.anrdoezrs.net/click-100...21&autoModel=Macan%20GTS&autoModClar=&rearTire=94WR0DWS06PXL&i1_Qty=2&tab=Sizes

Not true. Tires have the same designs, compounds, overlays, etc. Speed rating aligns more with what is in the market by size. Driven by OEM vehicle placards. And all tire manufactures test the tires 1-2 steps over the molded rating in development.

You can install H and W tires on the car. The speed limit on the vehicle is lowered to the lesser speed rating. H in this example, 130 mph.

TireRack must follow vehicle placard ratings for liability (Load and Speed ratings).

The DWS06 Plus is not an H rated tire. W+.

OK, so the original #1 post did not mention any size. Only comment was that for his application he said that Fronts are only available in H rating and rears are only available in W rating.

H is 130mph
W is 168mph

It is indicated as a speed rating but is more about the tires ability to perform at that speed. Or tire integrity. The vehicle manufacturer also tunes the suspension with 'certain expectations'. So the suspension is performing with the assumption the tire is as the manufacturer expected. So a 'softer tire' will not absorb what the suspension is expecting. So, among other things, the tire scrubs causing premature or uneven wear. Think I will stick with tires that are designed to perform the same and as expected.

I said I would never mix H and W as the difference in speed rating was too great.

The DWS06 is a great tire and easy to recommend. As long as they match. I've sold hundreds.

This is what I got from a simple Google search

 

[Santirx]

Well, we need some clarification from the OP. The Continental ExtremeContact DWS06 Plus only comes in W and Y speed ratings. As I stated earlier, there is no H speed rating for these tires that I have found. I just did a query of about 20 DWS06 Plus tire sizes in their website and all are W/Y.

@Rusty Rotors, your point is valid if we were talking about H and W. But most likely this is about W and Y as I stated before too. This is turning out to be a non-issue.

But the point is that the tires, even when you are using staggered W on the front wheels and Y on the rear wheels, they are just fine as they are proximal ratings, they are very high speed, and ultimately performs very good in the Macan (first-hand experience here).

 

[wwahl]

Tires depend on your needs. Those two guys that had a blowout at 200 MPH in Sun Valley in their 911 July 20th wish they had the appropriate tires now.

 

[Smike]

OK, so the original #1 post did not mention any size. Only comment was that for his application he said that Fronts are only available in H rating and rears are only available in W rating.

H is 130mph
W is 168mph

It is indicated as a speed rating but is more about the tires ability to perform at that speed. Or tire integrity. The vehicle manufacturer also tunes the suspension with 'certain expectations'. So the suspension is performing with the assumption the tire is as the manufacturer expected. So a 'softer tire' will not absorb what the suspension is expecting. So, among other things, the tire scrubs causing premature or uneven wear. Think I will stick with tires that are designed to perform the same and as expected.

I said I would never mix H and W as the difference in speed rating was too great.

The DWS06 is a great tire and easy to recommend. As long as they match. I've sold hundreds.

This is what I got from a simple Google search

View attachment 286164

Much is factually incorrect here. OP was factually wrong about DWS06 Plus in H.

I've sold hundreds of thousands of DWS06 and Plus

Again, same tread/pattern - its the same tire but marketed towards different vehicle applications (there for speed ratings). 20 years in tire design and development - OE and REP. USTMA collects this information from all member tire makers - so it is fed by new OE applications - speed and load ratings. Tire makers then use that to build replacement lines to meet those needs. If the market is 20% T, 70% H, and 10% V - most manufactures would opt for H since it meets the majority of the market for a broadline tire.

Putting a different pattern/speed rated tire = different tire compounds front and rear. And agree with Google - THAT IS BAD. Retailer environment - split fitments run into speed rating differences all the time once outside of OEM replacement tires. And my comment stands - same tire pattern, compound = vehicle becomes limited to the lower rated tire.

No speed rating is speed rating - period. Not some magic at speed formula. DOT test on a rolling wheel, taken up to speed for timed steps. Read test for yourself - FMVSS 139.

OEM will tune steering and suspension spring rates/dampeners to the OE tire for turn-in feel, loading in corners. Once into REP - they are built to general tire needs. Not specific platform.

Speed ratings do not relate to tire stiffness. Stiffness is bead set distance on TBM drum, designed carcass spring rate, ply used, overlay and tension.

What is the tire scrubbing on? That is softer? That makes no sense. If the vehicle has an alignment for toe-in, as speed increases, the wheel alignment will be forced to neutral (0) and then toe out at the extremes - this is regardless of tire used.

Tire compounds are very complex. "Softer" does not mean more grip (define grip too - longitudinal/lateral?). There is physical and mechanical grip. Durometer and tread pattern/blocks/stiffness are how the tire physically interacts with the surface. Wet (and ice) traction is from the chemical composition of the compound - the mechanical adhesion between tires and surface.

 

[FlyPenFly]

Much is factually incorrect here. OP was factually wrong about DWS06 Plus in H.

I've sold hundreds of thousands of DWS06 and Plus

Again, same tread/pattern - its the same tire but marketed towards different vehicle applications (there for speed ratings). 20 years in tire design and development - OE and REP. USTMA collects this information from all member tire makers - so it is fed by new OE applications - speed and load ratings. Tire makers then use that to build replacement lines to meet those needs. If the market is 20% T, 70% H, and 10% V - most manufactures would opt for H since it meets the majority of the market for a broadline tire.

Putting a different pattern/speed rated tire = different tire compounds front and rear. And agree with Google - THAT IS BAD. Retailer environment - split fitments run into speed rating differences all the time once outside of OEM replacement tires. And my comment stands - same tire pattern, compound = vehicle becomes limited to the lower rated tire.

No speed rating is speed rating - period. Not some magic at speed formula. DOT test on a rolling wheel, taken up to speed for timed steps. Read test for yourself - FMVSS 139.

OEM will tune steering and suspension spring rates/dampeners to the OE tire for turn-in feel, loading in corners. Once into REP - they are built to general tire needs. Not specific platform.

Speed ratings do not relate to tire stiffness. Stiffness is bead set distance on TBM drum, designed carcass spring rate, ply used, overlay and tension.

What is the tire scrubbing on? That is softer? That makes no sense. If the vehicle has an alignment for toe-in, as speed increases, the wheel alignment will be forced to neutral (0) and then toe out at the extremes - this is regardless of tire used.

Tire compounds are very complex. "Softer" does not mean more grip (define grip too - longitudinal/lateral?). There is physical and mechanical grip. Durometer and tread pattern/blocks/stiffness are how the tire physically interacts with the surface. Wet (and ice) traction is from the chemical composition of the compound - the mechanical adhesion between tires and surface.

What are your thoughts on N0 ratings from Porsche for tires like the Pilot Sport 4S? Was always curious if it actually meant anything.

 

[Teddis]

Well, we need some clarification from the OP. The Continental ExtremeContact DWS06 Plus only comes in W and Y speed ratings. As I stated earlier, there is no H speed rating for these tires that I have found. I just did a query of about 20 DWS06 Plus tire sizes in their website and all are W/Y.

@Rusty Rotors, your point is valid if we were talking about H and W. But most likely this is about W and Y as I stated before too. This is turning out to be a non-issue.

But the point is that the tires, even when you are using staggered W on the front wheels and Y on the rear wheels, they are just fine as they are proximal ratings, they are very high speed, and ultimately performs very good in the Macan (first-hand experience here).

I am 2 years on these as well.. 21's Awsome Tire.

 

[GoPedal]

Any reason not to fit alternative sizing to get the same speed rating all around?

The following 20" f/r sizes bring up the same speed ratings for the DWS 06 Plus on tirerack:

Front: 275 40 20
Rear: 315 35 20

 

[BaldyGSripper]

Yes, I am the original poster and the H was a typo. I corrected that on my second post.
These tires are for a stock 20" fitment.

Whether it's H/Y or Y/W, even if the speed ratings are closer to each other, my question still stands:
whether it's really okay to install mismatched tires with different speed ratings.
Continental says yes. TireRack says no. Even on this thread, not everyone seems to agree.

The whole reason I started this thread is because I want to install DWS tires and the manufacturer, so far,
has been unable to give me an official explanation as to why it is okay to install mismatched tires with different speed ratings (even if the tread, structure, stiffness are the same). I may very well end up buying them either way
(yes, I know I can by them by size- I've done it many times before).
Heck, I even have mismatched tires on both my M3s with no ill effects.

But at this point I want an official explanation.
Continental emailed me saying they will have an answer from their engineering department this Monday.
We shall see...

As far as the Sun Valley Tour de Force high-speed shootout blowout, don't even get me started on that one...

 

[Smike]

What are your thoughts on N0 ratings from Porsche for tires like the Pilot Sport 4S? Was always curious if it actually meant anything.

The N is Porsches OEM marked tire and does mean something. It was designed with the Porsche development team and that tire manufacturer (first fitment). Tire and vehicle are tuned together in the ride/handling/noise testing as part of the vehicle development cycle. Focuses tend to be on steering feel, stopping distances, noise, and MPG (RRc). Vehicle suspension geometry (alignment), spring rates (spring/airbag/dampener), ABS/TC settings - all tuned to tire inputs.

But, and BIG but - these are tuned for trained test drivers to discern differences out of a 10 point scale. Most differences between sets are 0.25 points - only noticed by test drivers. Going from OEM to replacement (quality Tier 1 or Tier 2 tires) - ~0.5 point in objective and subjective marks - observable and stable differences. E.g. 4 dBs louder or stops +/- 5 ft.

 

[VAGfan]

A different speed rating is not a "tire mismatch" of concern, unless you want to exceed the speed of the lowest rated tire.....
Guidelines about "don't mismatch tires" is about brand and tire model (tread compound, tread pattern), not about speed ratings.
And, replacement tires must have an equal or greater Load Rating.

 

[BaldyGSripper]

I agree, but TR and many online sources seem to think otherwise.

But none of us are tire engineers (my apologies if you are).
Hence why I reached out to the tire manufacturer and their engineers for clarification and confirmation. Nothing more, nothing less. 🙂

 

[VAGfan]

Because of legal liability, no tire retailer is going to specify anything other than what meets the specifications of the tires that the vehicle manufacturer originally equipped the vehicle with.

 

[Smike]

I agree, but TR and many online sources seem to think otherwise.

But none of us are tire engineers (my apologies if you are).
Hence why I reached out to the tire manufacturer and their engineers for clarification and confirmation. Nothing more, nothing less. 🙂

I am

TireRack is liable to match vehicle placard - 1:1.

 

[BaldyGSripper]

I am

Good to know!
See? Now I feel much better about it. 😁

 

[FlyPenFly]

The N is Porsches OEM marked tire and does mean something. It was designed with the Porsche development team and that tire manufacturer (first fitment). Tire and vehicle are tuned together in the ride/handling/noise testing as part of the vehicle development cycle. Focuses tend to be on steering feel, stopping distances, noise, and MPG (RRc). Vehicle suspension geometry (alignment), spring rates (spring/airbag/dampener), ABS/TC settings - all tuned to tire inputs.

But, and BIG but - these are tuned for trained test drivers to discern differences out of a 10 point scale. Most differences between sets are 0.25 points - only noticed by test drivers. Going from OEM to replacement (quality Tier 1 or Tier 2 tires) - ~0.5 point in objective and subjective marks - observable and stable differences. E.g. 4 dBs louder or stops +/- 5 ft.

Thank you, super informative. I guess I will aim to get N0 always as was spaced for my 718 GTS.

 

[Rusty Rotors]

Much is factually incorrect here. OP was factually wrong about DWS06 Plus in H.

I've sold hundreds of thousands of DWS06 and Plus

Again, same tread/pattern - its the same tire but marketed towards different vehicle applications (there for speed ratings). 20 years in tire design and development - OE and REP. USTMA collects this information from all member tire makers - so it is fed by new OE applications - speed and load ratings. Tire makers then use that to build replacement lines to meet those needs. If the market is 20% T, 70% H, and 10% V - most manufactures would opt for H since it meets the majority of the market for a broadline tire.

Putting a different pattern/speed rated tire = different tire compounds front and rear. And agree with Google - THAT IS BAD. Retailer environment - split fitments run into speed rating differences all the time once outside of OEM replacement tires. And my comment stands - same tire pattern, compound = vehicle becomes limited to the lower rated tire.

No speed rating is speed rating - period. Not some magic at speed formula. DOT test on a rolling wheel, taken up to speed for timed steps. Read test for yourself - FMVSS 139.

OEM will tune steering and suspension spring rates/dampeners to the OE tire for turn-in feel, loading in corners. Once into REP - they are built to general tire needs. Not specific platform.

Speed ratings do not relate to tire stiffness. Stiffness is bead set distance on TBM drum, designed carcass spring rate, ply used, overlay and tension.

What is the tire scrubbing on? That is softer? That makes no sense. If the vehicle has an alignment for toe-in, as speed increases, the wheel alignment will be forced to neutral (0) and then toe out at the extremes - this is regardless of tire used.

Tire compounds are very complex. "Softer" does not mean more grip (define grip too - longitudinal/lateral?). There is physical and mechanical grip. Durometer and tread pattern/blocks/stiffness are how the tire physically interacts with the surface. Wet (and ice) traction is from the chemical composition of the compound - the mechanical adhesion between tires and surface.

Thanks for the over reacted response to my dumbed down response to the original H vs Y speed rating question that has nothing to do with speed.. looks like I caught a fish.

 

[Smike]

Thanks for the over reacted response to my dumbed down response to the original H vs Y speed rating question that has nothing to do with speed.. looks like I caught a fish.

Nope, just one of us has a very different look on reality and facts.

 

[jason111]

When I looked, DWS doesn’t have both front and rear sizes for a turbo with 21 wheels. Has that changed?

 

[LogCabinTom]

Back in March 2023 before I took delivery of my S, this is the comparison tires offered by Tire Rack. Based on the reviews and performance comparisons, the Geolandar X-CV looked like a good tire for my car, and it looks like things haven't changed in the Tire Rack ratings department. Does anyone have anything bad to say about the Geolandar X-CV? I'm probably still a year from needing new tires, so I'm just curious.