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Just replaced my 20" OEM Pirelli P Zero Run Flat tires got 5.5 years(14,000 miles)out of them. 2019 CLS 53 AMG
Yearly alignments and constant pressure checks and pothole and rough asphalt avoidance best I could.
The front inner treads shredded at 14,000. See photos.
Replaced with Continental DWS 06 Plus Performance All Season.
What a difference in handling in the dry. Let's just say I am a little displeased with the dry performance comparison vs the OEM Pirelli PZero run flats run flats.
I typically drive in the comfort and economy setting rarely switching to sport or sport plus. The car is leaning much more in turns and I could definitely feel the difference in swooping curves and coming off the freeway off ramps. The noise and comfort difference is not significant. It is improved about 15% in my opinion.
Continental has a guarantee to take the tires back within 60 days. Has anybody ever use that guarantee?
I chose these tires because:
1) 560 AA wear rating and the possibility of taking the car to the mountains once in a blue moon
2) Increased comfort and noise
Car Never sees freezing temperatures and very little rain. Mostly dry year round with 55F-75F avg.
What should I do?
Last edited by Rick2019; Mar 31, 2025 at 01:50 PM.
Because the Summer OE run-flats have a much stiffer sidewall, that's probably why the All-Season go-flat Conti tires seem softer in corners, resulting in more "leaning."
If you want to go back with Summer run-flats and don't want the OE Pirelli's, maybe a good option would be the Michelin Pilot Sport 3 ZP.
Compared to run-flats, just about any go-flat tire will seem softer. Run-flats have stiffer sidewalls in order to support the vehicle weight if the tires lose air.
Try looking at the TireRack site. They have lots of reviews and charts so you can compare different attributes of the tires you're interested in. (noise, dry handling, wet handling, braking, etc.)
You mentioned yearly alignments were done, but the way those front tires looked makes me wonder if there are worn bushings or some other wonky suspension parts.
How would you compare summer high performance tires vs high performance run flats?
The run flat concept is great. I just cannot sleep at night knowing once the tire is punctured it cannot be repaired or replaired really well.
Yes, I have used tire rack.com to read reviews and specs and ratings.
The Michelin PS 3 ZP seem really great.
Interesting thought about the worn bushings, etc
Originally Posted by Eurocar11
Because the Summer OE run-flats have a much stiffer sidewall, that's probably why the All-Season go-flat Conti tires seem softer in corners, resulting in more "leaning."
If you want to go back with Summer run-flats and don't want the OE Pirelli's, maybe a good option would be the Michelin Pilot Sport 3 ZP.
Compared to run-flats, just about any go-flat tire will seem softer. Run-flats have stiffer sidewalls in order to support the vehicle weight if the tires lose air.
Try looking at the TireRack site. They have lots of reviews and charts so you can compare different attributes of the tires you're interested in. (noise, dry handling, wet handling, braking, etc.)
You mentioned yearly alignments were done, but the way those front tires looked makes me wonder if there are worn bushings or some other wonky suspension parts.
Regardless of mileage and treadwear, car and tire manufacturers recommend replacing tires at 6 years. Rubber disintegrates with time and lack of use can accelerate this. I installed Geolander A/Ts right after taking delivery of my '19 G550, and despite the mileage (about 24K miles) and remaining tread (8/32 versus 12/32 new), I plan to replace them at the end of summer.
To Quote ".....You mentioned yearly alignments were done, but the way those front tires looked makes me wonder if there are worn bushings or some other wonky suspension parts."
ALIGNMENTS TODAY - The reality is (new car industry’s best kept secret). The often quoted re-assuring “Full Front & Rear ‘4’ Wheel Alignment” - IS IN FACT NOW ONLY BASIC TOE - “DIRECTIONAL ADJUSTMENT”/
Essential Camber and Caster to adjust tire contact angles, resolve excess edge tire wear and leading to costly, premature tire replacement has been deleted.
All to do with cost cutting and ever increasing speed of new car assembly lines.
Now no adjustment to cater for excess “passengers side” edge wear through high cambered roads. Excess inner edge wear “both sides” - through load carrying or lowering. Excess outer edge wear through spirited driving.
We saw the need therefore to re-establish “ongoing adjustment capability” to resolve these premature tire wear issues.
K-MAC patented design kits are also “Bolt-On” - no special tools or need for control arm removal to install.
Unique patented design allows precise easily accessible single wrench adjustment. ULTIMATE - direct on alignment rack UNDER LOAD.
Providing more than enough adjustment to resolve premature tire wear issues.
SEE SPOILER
Spoiler
CLS 257 300 - 450 incl. 53 AMG
FRONT SUSPENSION
#503416-1i $345 4MATIC / AMG (Both Sides)
Camber only - less cost then 1 quality tire).
#503416M $595 (Both Sides)
Camber & Caster
#502816-1i $345 CLS 300-450 (Both Sides)
Camber only
#502816M $595 (Both Sides)
Camber & Caster
NOTE: CAMBER & CASTER KIT - replaces at same time the 4 front highest wearing bushes. K-MAC Caster bushes are also Mono Ball / Self Aligning replacing the OEM large diameter soft rubber bushes. Significantly improving Brake and Steering response.
Do run flats have stiffer tread areas that I circled?
Originally Posted by Eurocar11
Because the Summer OE run-flats have a much stiffer sidewall, that's probably why the All-Season go-flat Conti tires seem softer in corners, resulting in more "leaning."
If you want to go back with Summer run-flats and don't want the OE Pirelli's, maybe a good option would be the Michelin Pilot Sport 3 ZP.
Compared to run-flats, just about any go-flat tire will seem softer. Run-flats have stiffer sidewalls in order to support the vehicle weight if the tires lose air.
Try looking at the TireRack site. They have lots of reviews and charts so you can compare different attributes of the tires you're interested in. (noise, dry handling, wet handling, braking, etc.)
You mentioned yearly alignments were done, but the way those front tires looked makes me wonder if there are worn bushings or some other wonky suspension parts.
Are you telling me all mercedes dealers follow this method of only adjusting basic toe and directional adjustment?
Originally Posted by K-Mac
ALIGNMENTS TODAY - The reality is (new car industry’s best kept secret). The often quoted re-assuring “Full Front & Rear ‘4’ Wheel Alignment” - IS IN FACT NOW ONLY BASIC TOE - “DIRECTIONAL ADJUSTMENT”/
Essential Camber and Caster to adjust tire contact angles, resolve excess edge tire wear and leading to costly, premature tire replacement has been deleted.
All to do with cost cutting and ever increasing speed of new car assembly lines.
Now no adjustment to cater for excess “passengers side” edge wear through high cambered roads. Excess inner edge wear “both sides” - through load carrying or lowering. Excess outer edge wear through spirited driving.
We saw the need therefore to re-establish “ongoing adjustment capability” to resolve these premature tire wear issues.
K-MAC patented design kits are also “Bolt-On” - no special tools or need for control arm removal to install.
Unique patented design allows precise easily accessible single wrench adjustment. ULTIMATE - direct on alignment rack UNDER LOAD.
Providing more than enough adjustment to resolve premature tire wear issues.
SEE SPOILER
Spoiler
CLS 257 300 - 450 incl. 53 AMG
FRONT SUSPENSION
#503416-1i $345 4MATIC / AMG (Both Sides)
Camber only - less cost then 1 quality tire).
#503416M $595 (Both Sides)
Camber & Caster
#502816-1i $345 CLS 300-450 (Both Sides)
Camber only
#502816M $595 (Both Sides)
Camber & Caster
NOTE: CAMBER & CASTER KIT - replaces at same time the 4 front highest wearing bushes. K-MAC Caster bushes are also Mono Ball / Self Aligning replacing the OEM large diameter soft rubber bushes. Significantly improving Brake and Steering response.
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Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
