Hey guys,

I'm looking for a bit of advice. My wheels specs are below, and I'd like to know if a 245/35/18 front and 265/35/18 rear tire setup would be feasible. I've done the math and, in my head, I think everything should fit alright. Tire diameter is relatively close to stock as well with this sidewall measurement.

18x8.5 +47
18x9.5 +42

The car will be lowered 1.5" to 2" with close to -2.5 to -3 degrees of camber, which I consider acceptable/functional.

Also, there seems to be a decent selection of tires with a 300 tread wear rating in these sizes, although not many in the 200 TW rating. Any suggestions there? I know of the Falken Azenis, but they are pretty pricey, especially in 18" sizes.

I am aware that my rear quarters will essentially need to be rolled flat or even trimmed, and that the fronts will have to also be rolled/trimmed and possibly flared slightly, although the front sizes are a good bit less aggressive than the popular 17x9 +45 255/40 size, which should afford some more fender clearance

 

No need flare the fronts. Just do the typical fender rolling and the 245 will fit fine up front with -2.5. Id look at the manufactures size spec for the 265 and compare that with a typical 255/40/17 extreme summer to see if there are any width differences between he two and if so how much in which direction, because really anything wider then the 255/40/17 and your going to face a challenge with that offset and width and not going more then -3 on the camber, which I definitely would not. and -2.5 is better.

 

I had to jump around on wheel diameter and sidewall height due to missing info, but I found some tread widths for the Hankook v12's since I had these tires on my stock wheels and was pretty pleased with them.

255/35/18 comes in at 222mm tread width
265/30/19 comes in at 238mm tread width

So roughly 16mm wider from a 255 to a 265. Making the outer clearance 8mm more aggressive. The chart I found did show the same tread width for a 225 in a few different sidewall heights and wheel diameters so this should be accurate info.

 

Considering the common 17x9 +45 255 setup again, that would make the outer clearance of my wheels with the 265 about 11mm MORE aggressive (8mm accounting for the tire and 3mm accounting for the change in offset)

Since the 9" +45 is pretty easy to fit the 255 in the rear, and I have seen a 9" +35 with a 255 done, I think I should be alright.

 

Not quite. Your rim will stick out 10mm more aggressive then a 9 +45. With a 255/40/17 spread over a 9.5" it sits pretty square and at +42 offset you are right there on outer fitment. Anymore aggressive an offset and your either cranking past -3 camber, or looking at trying to pull the fender. This is why I suggested that you size up some 255/40/17 extreme summers compared to a 265/18. I don't think it will fit after taking all the considerations. If you can find a 265 that is no wider then a 255/40/17 then you should be good.

 

Don't use this as your fitment decision. This wont be consistent. We know that a 255/40/17 will just make it on your wheel spec. Now you need to shop 265/35/18 for comparable widths to that. Your already at a disadvantage with the overall larger height/diameter of a 265/35. You need to match the section width, more then the tread width for fitment. Your probably better off going with a 255/35 in the rear.

 

Thanks for the help Junky!

 

No prob! Dont want you to have the wrong expectations. Its a lot invested and its a really close fit.

 

FWIW, i have a 265 RE760 on my 9.5 for my daily and it is ever so slightly stretched. but the 245/40 i have up front on the 8.5 sits much fatter. both are 18" and the 760s are 300 treadware. but yeah, if you are just starting, id recommend a 255/35/18

 

Just starting what?

I see the offset of the wheels in your sig, which means you must have some sort of overfender. Really the one reason I wanted the 265 in the rear was so that the sidewall profile would more closely match the front so I appreciate the feedback about that.