MBfinatic

I have been wondering about this and would like to know. Mine are the stock 245`s in the back right now.

chris.bachman

Not sure if you care to know but I just put 265's on 8.5's in the rear of my C32.

MBfinatic

ya im wondering about fitting 285. by the way your car sounds awesome

alpha8a

265s on a 10" wheel in the rear. Stock suspension and it rubs on the inner fenders a little bit over big dips. I'm going to try 275's this summer and hope it doesn't rub too much more than it already does. I don't think its possible to fit 285s unless you do a lot of mods to get it to fit.

JUAN CASAUS

I had 275's and they rubbed alot...going with 265's next on C55 rims

SoCalC55

Simple guide
245: Stock
255: best "safe" size
265: will rub with people/weight in trunk, but only minimally
275+: modification needed unless you want major rubbing


personally I have run 3 sets of 255s with zero issues. However, in an attmept for better traction, im going to try 265s when this set is finished

ohlord

a 275 should fit if installed on the proper offset 9-9.5 inch rim.
The rim width and correct ET are the key.
You can always roll the arch and massage the bumper.

advans

255s on a 9.5 SL offset. I ran 275 with a 9.5 33/35 offset it only rubbed with ppl in the car, had rolled fenders

chris.bachman

Thanks, it's broken in now and sounds so good. Having intake work done this weekend that might change the tone a bit.

mrobinso

I think that overall this is good guidance, however, you can definitely run 265s on stock suspension without rubbing and a full load of people and luggage in the trunk. I received a really good deal on a set of like-new Dunlop Wintersport SPs from a C63 owner, which I am currently running. Rears are 265/35/18 and no issues for 4,000 miles of driving this winter. I think the problem with 265s mainly is a result of people with modified/lowered suspension.

Viper98912

I love the look and balance of 225/40/18 and 255/35/18.

MBfinatic

im mainly trying to get better traction when launching my car.

b344j07

Same here,

255 should be fine, should of came with 255's from factory.

MBfinatic

mine has on it now 245???

b344j07

Yes, that's stock size, I have the same.

255's at the rears should be fine, they should of came with 255 from factory in the first place

JUAN CASAUS

I'd say go with 265's

kent426

I've got 235/ 275 combo on SL55 rims. What I noticed and hear from other people is that the drivers side rubs more than the passenger side so it sound like a tooling problem. To run 275's, pull out the grinder because mine rubbed where the lower bumper plastic ties in to the quarter panels. The stiffening ribs will need to be ground to nothing. The wheel arches really didn't rub. Fill your trunk up with a couple big bags of cement and back the car on a ramp and stuff a feeler gauge or place masking tape on the inner fenders to see where it rubs.

MBfinatic

ya i may just go with 265 unless there is a safe easy way to go wider.

AMGMIZ

I am on 275 now

mrobinso

As Viper mentioned before, 255s are going to give you the cleanest look. 265s on stock rims will give you a "ballooned" look. Or in other words, your tires will bulge out over the lip of the rim. I have gotten used to it since I had my winter tires installed, but in about a month I am getting my summer tires back on (ContiSports 245/35/18) and I definitely prefer the flush look over the 265s.

thtguy

265s on 9.5" Wheels

I got my first and only rub last week when I had 4 adults in the car and I went over a speed bump too fast.

559EVO

I rubbed with 265/35/18 on a 9.5 rim only in the left rear side, I grinded the metal attachment clips and no rubbing so far. Might try 275/35/18 or 285/30/18 next, 285/30 is actually the same stock diameter compared to 265 or 275 on a 35 series tire that is taller.

ruben65

I currently run 255 in the rear on the stock 8.5" rims, no rubbing at all. Handling, cornering etc... feels much more controlable with the wider tire. The overall rear stance tire edge to tire edge is 68.75" wide with 255 width tires on it.

The stock stance tire edge to tire edge is 67.75" wide with 245 width tires.

I would say the widest you could go on stock rims and no rubbing would be 265, but you would have some noticable buldge over the lip of the rim.

Here are mine on the stock rim.

ruben65

More pics with 255 width tire on stock 18"

JUAN CASAUS

Do you have spacers on your car? Does anyone know if I'd need to run longer lug nuts for 5mm or 10mm spacers