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Help! Time for new tires... Calling all wheel/tire experts
Heard a funny noise today while driving and when i peaked under the car i noticed both rear tires are shot... So now i'm in the market for two new rear tires. Only problem here is the size tires i have now are rather strange...
Here are the specs of my wheels w/ tires:
20x8.5 ET40 w/ 245/30/20
20x10 ET50 w/ 285/25/20
I'm currently lowered on H&R springs, is there any other tire size i can run other than what's listed?
Last edited by itzjonjon69; 04-22-2017 at 02:12 AM.
2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
I'm surprised you got a 285-20 to fit. You're not going to get that lucky with a 295 unless you roll the fender, but the tire height also isn't working in your favor here.
Right now your tire height is 25.8/25.6. A 255/30 in front just makes that worse at 26/25.6.
Use these charts to play around. My guess is that you need to keep the overall tire height under 26" to not rub. Not many choices unfortunately.
I'm surprised you got a 285-20 to fit. Don't think you'll get that lucky with a 295.
Right now your tire height is 25.8/25.6. A 255/30 in front just makes that worse at 26/25.6.
Use these charts to play around. My guess is that you need to keep the overall tire height under 26" to not rub. Not many choices unfortunately.
Yeah I just looked again and 285/25 fits nice and snug with 295 I'll rub for sure. Guess I'll stick to the original specs just sucks because not a lot of choices... thanks guys!
What tire is on the rear now? Keep in mind, another brand/make won't have exactly the same profile so you could rub with something else in the same size.
What are your guys thoughts on the Toyo T1R? Only reason why I ask is because my front two tires (Michelin PSS) are pretty much brand new. Since we have a tire wear issue with the c63 should I just buy a decently priced tires for the rear?
12 C63BS Magno Alanite Grey, 22 X3M Brooklyn Grey, 08 BMW E93, 22 Ducati Desert Sled, John Deere 3R
The important part is don't mix, completely different handling characteristics front to rear can be a bit exciting and although not cheap, the PSS is the way to go at least until the PS4 comes in more sizes!
Oh that's not bad, I was thinking more along the lines of only 4-5k miles. When I bought the wheels they came with the tires. Fronts were brand new and rears had about 50-60% tread life
12 C63BS Magno Alanite Grey, 22 X3M Brooklyn Grey, 08 BMW E93, 22 Ducati Desert Sled, John Deere 3R
Originally Posted by itzjonjon69
Oh that's not bad, I was thinking more along the lines of only 4-5k miles. When I bought the wheels they came with the tires. Fronts were brand new and rears had about 50-60% tread life
Well depends on your right foot mostly, but I have about 50% life left on my 335i PSS's on the rear with 10k miles on them, it is a 400 HP at the wheels car with about 450 ft/lbs, not quite as hard on tires as the C63 but not the easiest on them either.
Warrant is 30k miles if you rotate which you can't so 15k if you can rotate them, so they claim they will last 15k on the back - wonder if anyone has got anything out of them for less wear?
I think he meant wear mileage which is like 15k on PSS's.
If he is hoping it improves his cars mileage, he definitely bought the wrong car
Oh I know he meant tread wear mileage, not fuel mileage. But, I think, after reading hundreds of posts in my tour of the past postings, that 15k miles on the PSSs might be a stretch unless he drives as conservatively as I do.
12 C63BS Magno Alanite Grey, 22 X3M Brooklyn Grey, 08 BMW E93, 22 Ducati Desert Sled, John Deere 3R
Originally Posted by JimGnitecki
Oh I know he meant tread wear mileage, not fuel mileage. But, I think, after reading hundreds of posts in my tour of the past postings, that 15k miles on the PSSs might be a stretch unless he drives as conservatively as I do.
Jim G
ya probably a serious stretch unless you have no fun!
Right now, I bought new wheels front 19x9 and 19x10 rear and I'm lowered with HnR coilovers. Am I able to use front 245/35/19 and rear 265/30/19? or should I use rear 275/30/19? Will I rub on the rear?