When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
No reason the tires should wear unevenly if properly aligned and inflated. The dealer will also check for any suspension fitting wear that indicates repair is needed. Here is what my front and rear tires look like after 10K miles. They will need replacing in another 6k to 8K miles. Total vehicle miles is 54k. The wear is very close to even across the width of the tires.
Rear Front
Last edited by Quadrobenz; Oct 3, 2025 at 04:49 PM.
No reason the tires should wear unevenly if properly aligned and inflated. The dealer will also check for any suspension fitting wear that indicates repair is needed. Here is what my front and rear tires look like after 10K miles. They will need replacing in another 6k to 8K miles. Total vehicle miles is 54k. The wear is very close to even across the width of the tires.
Rear Front
Mine total car and tires milage was around 24K miles (low). I have replaced them already. But I should have checked alignment and for any passible cause.
The tire wear pictured is most likely from an incorrect toe setting. If the negative camber is large enough to cause that wear then something is worn out or broken. The factory spec for camber is 1/2 degree negative for the front and 2 degrees negative for the rear. That is not enough camber to cause any inside edge tire wear. The pictures of my tires posted above clearly show that amount of camber produces no inside edge wear. What is a problem on these cars is the inability of the suspension to hold the adjustments. I find that my W222 needs to be re-aligned once each year to keep the toe settings within factory spec and I only drive it about 4K miles/year, 90% expressway.
There are cars here in SoCal riding on 15 degree negative camber, front and rear. Tires on those cars I have seen up close show inside edge wear but still not as bad as on the OP's car. Put K-Mac adapters on your car if you want, but they should only be necessary if the car is lowered or has wheels offset enough to be flush with the openings.
All my comments are relative to W222's with MBC. The AWD cars with Airmatic can have a different set of issues. In general it is much more challenging to get even tire wear. One of several reasons we decided to get rid of our E63S 4Matic. The K-Mac parts may be the only fix for many of the AWD cars. Some dealers will not perform alignments after the mods so be sure you have a first class alignment shop.
Last edited by Quadrobenz; Oct 5, 2025 at 04:17 PM.
Toe: think of a traditional farm tractor. The tires form a point like a spearhead aimed straight down at the soil. This allows the tires to plow through soft soil, and not sink in.
Camber: same as toe, except now the point of the spear is pointing ahead of the car to the horizon. This helps the car turn more easily.
Caster: this is an adjustment to the steering axis.
Knowing these adjustments, will allow the most probable cause of uneven tire wear.
But also bear in mind, for performance or handling purposes these setting might be intentionally set in a way that cause never tire wear.
As another poster said, tire pressure must also be optimal to provide even tire wear.
In the case of the OP, inside edge excessive wear on one tire, would lead to concluding that camber on that tire is set improperly.
If both tires are wearing the inside edge, toe would be suspected.
Toe: think of a traditional farm tractor. The tires form a point like a spearhead aimed straight down at the soil. This allows the tires to plow through soft soil, and not sink in.
Camber: same as toe, except now the point of the spear is pointing ahead of the car to the horizon. This helps the car turn more easily.
Caster: this is an adjustment to the steering axis.
Knowing these adjustments, will allow the most probable cause of uneven tire wear.
But also bear in mind, for performance or handling purposes these setting might be intentionally set in a way that cause never tire wear.
As another poster said, tire pressure must also be optimal to provide even tire wear.
In the case of the OP, inside edge excessive wear on one tire, would lead to concluding that camber on that tire is set improperly.
If both tires are wearing the inside edge, toe would be suspected.
Your description of camber and toe are reversed.
OP get an alignment... Preferably at a competent Mercedes dealership.
Low miles says the likelyhood of worn parts is low.
OP get an alignment... Preferably at a competent Mercedes dealership.
Low miles says the likelyhood of worn parts is low.
You are correct. I misspoke. My apologies. I was thinking toe-in, which is a memory aid(as opposed to toe-down), but didn’t follow through on my thought.
Looking at the first photo, there are a lot of "cracks" and I'm not so sure these are because of bad alignment and so on.
At that mileage they should not look that way unless they're old, which they're not or they're a ****... brand or they're used in a very hot climate.
Just my.02
The tire wear pictured is most likely from an incorrect toe setting. If the negative camber is large enough to cause that wear then something is worn out or broken. The factory spec for camber is 1/2 degree negative for the front and 2 degrees negative for the rear. That is not enough camber to cause any inside edge tire wear. The pictures of my tires posted above clearly show that amount of camber produces no inside edge wear. What is a problem on these cars is the inability of the suspension to hold the adjustments. I find that my W222 needs to be re-aligned once each year to keep the toe settings within factory spec and I only drive it about 4K miles/year, 90% expressway.
There are cars here in SoCal riding on 15 degree negative camber, front and rear. Tires on those cars I have seen up close show inside edge wear but still not as bad as on the OP's car. Put K-Mac adapters on your car if you want, but they should only be necessary if the car is lowered or has wheels offset enough to be flush with the openings.
All my comments are relative to W222's with MBC. The AWD cars with Airmatic can have a different set of issues. In general it is much more challenging to get even tire wear. One of several reasons we decided to get rid of our E63S 4Matic. The K-Mac parts may be the only fix for many of the AWD cars. Some dealers will not perform alignments after the mods so be sure you have a first class alignment shop.
Toe: think of a traditional farm tractor. The tires form a point like a spearhead aimed straight down at the soil. This allows the tires to plow through soft soil, and not sink in.
Camber: same as toe, except now the point of the spear is pointing ahead of the car to the horizon. This helps the car turn more easily.
Caster: this is an adjustment to the steering axis.
Knowing these adjustments, will allow the most probable cause of uneven tire wear.
But also bear in mind, for performance or handling purposes these setting might be intentionally set in a way that cause never tire wear.
As another poster said, tire pressure must also be optimal to provide even tire wear.
In the case of the OP, inside edge excessive wear on one tire, would lead to concluding that camber on that tire is set improperly.
If both tires are wearing the inside edge, toe would be suspected.
I see, you have the V8 with Airmatic and AWD. That car came from the factory with 20" wheels and 245/40 fronts and 275/35's rear. All are EMT (run-flats.) Were it my car I would ditch the RFT's and put on the correct size for a 5,200lb car which are the MB AMG spec tires. These are 255/40-20 front and 285/35-20 rear and are not run flat tires. This MB spec tire has a (Y) speed rating and AA traction rating. The correct tire pressures to use with those tires are 44 front, 38 rear for normal driving with two people in the car. Make sure the car is correctly aligned with the new tires on the car. The AWD Maybach has almost the same suspension as the E63S 4Matic. We had to get the wheels realigned on our E63S every 6 months to get reasonable tire wear. The dealer comped us for the second alignment in the same year. We finally got rid of that car because of the constant realignment needs and the AGM batteries that failed at least once/year (4 batteries in 4 years.) I so much prefer the Lithium Ion battery in our S65's. Staying with the smaller sized run flat tires on the Maybach is a loosing battle in my opinion.
I see, you have the V8 with Airmatic and AWD. That car came from the factory with 20" wheels and 245/40 fronts and 275/35's rear. All are EMT (run-flats.) Were it my car I would ditch the RFT's and put on the correct size for a 5,200lb car which are the MB AMG spec tires. These are 255/40-20 front and 285/35-20 rear and are not run flat tires. This MB spec tire has a (Y) speed rating and AA traction rating.
Tom, Were there any fitment issues with those wider tires? I am about to get new tires for my S550C4 coupe and am considering the sizes you mention.
As long as the car has the 20" staggered wheels they fit fine. Those size tires were standard on the A217 S65 cabriolet which we have, and also on the C217 S65 coupe. The wheel offset on the RWD is 43mm, the same as on the S65 W222 sedan. The tires fit because that size was standard on the AWD S63 C217 and A217. I recommend the Michelin Pilot PS4s, doubt you will need all season tires in Santa Barbara.
As long as the car has the 20" staggered wheels they fit fine. Those size tires were standard on the A217 S65 cabriolet which we have, and also on the C217 S65 coupe. The wheel offset on the RWD is 43mm, the same as on the S65 W222 sedan. The tires fit because that size was standard on the AWD S63 C217 and A217. I recommend the Michelin Pilot PS4s, doubt you will need all season tires in Santa Barbara.
Thanks Tom. My C217 AWD has the AMG 20" staggered wheels. I currently have the standard size 245/40 and 275/35R20 with Michelin Pilot Sport 4s and have been happy with those tires but have been thinking about the larger sizes for the reasons that you mentioned. Thanks again.
I think you will like the car with the larger width tires. If you wanted to significantly up the game and tune the 550 for another 125 ft-lb of torque, the 295/30 and 265/35's from the E63S will also fit. I had the dealer put those 295's on my SL65, made a big difference in traction.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
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.
