Hello, I have really been researching this, but have yet to get 100% definitive answer. I see in the tire size info sticky page it says

"+48 to +52 offset: 215 tires, 7.0" - 8.0" wide wheel", max size for the fronts. But have seen many other threads where people have posted running larger with no issue. I really would like to run 245/45/17 (having falken azenis 615k in mind) all around. Ideally i would like to run this size without having to roll the front fenders.

(ps it will be on a 50mm offset rim)thanks

 

You will be fine no need to roll fenders

 

With the 45 it will rub. With the 40 which is the correct size you have a chance. It depends on the rim width as well on the 50. 8.5 or 9

 

What boyguan said^^^ 245/45-17 is nearly an inch taller than stock, will be a LOT more prone to rubbing.
Dunlop Direzza ZII, Yok AD08R, B'stone RE-11A would likely all be better tire choices, and come in 245/40-17 which should fit.

 

So I have been down this road.

First I think op you mean to say 245/40/17 square rear OEM fitment.

Not rubbing you will have to take in the following things into consideration:
- offset
- real world tire dimensions and not just tire class ie 245/40/17
- camber/alignment settings
- ride height

I know for a fact a +45 8" rpf1 with a 225/45/17 hankook rs3 up front will rub with anything less -2.8 degrees of camber @ pretty much any ride height from stock to 1.75" lowered on kw clubsports

What are you trying to accomplish op?

To be safe I would run a minimum of +52 offset and ideally a +55

Also are you running square because you want to be able to rotate tires?

Because my friend and I both run 225/255 staggered fitment and we are able to keep pace with the 245 square street tire guys.

Rubbing is super annoying.
#1 it tears up your fender liners and tires
#2 it means you can't use the full range of suspension travel which means you can't extract full potential out of your car

Also for me, adjusting camber to compensate for rubbing is stupid, IMHO.

I want to be able to adjust camber range for optimizing handling not avoiding rubbing.




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[quote name='gptoyz' timestamp='1389236962' post='22956450']
So I have been down this road.

First I think op you mean to say 245/40/17 square rear OEM fitment.

Not rubbing you will have to take in the following things into consideration:
- offset
- real world tire dimensions and not just tire class ie 245/40/17
- camber/alignment settings
- ride height

I know for a fact a +45 8" rpf1 with a 225/45/17 hankook rs3 up front will rub with anything less -2.8 degrees of camber @ pretty much any ride height from stock to 1.75" lowered on kw clubsports

What are you trying to accomplish op?

To be safe I would run a minimum of +52 offset and ideally a +55

Also are you running square because you want to be able to rotate tires?

Because my friend and I both run 225/255 staggered fitment and we are able to keep pace with the 245 square street tire guys.

Rubbing is super annoying.
#1 it tears up your fender liners and tires
#2 it means you can't use the full range of suspension travel which means you can't extract full potential out of your car

Also for me, adjusting camber to compensate for rubbing is stupid, IMHO.

I want to be able to adjust camber range for optimizing handling not avoiding rubbing.




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I wanted the flexibility to be able to rotate the tires. I am not dedicating this car to the track, but it is a fourth vehicle and will mostly get used for auto-x, limited daily driving. Looking at specs of many s2ks' that are set up to race ,i see a square set up 90 % of the time (just anecdotal, i know) , but never any mention of fender rolling.

 

Have you run this size or similar and had no issues?

 

No but a buddy of mines did and from what he told me he had no issues

 

Lol what I have learned is unless the cars are identical be skeptical before the "a friend of a friend runs the same setup" bug bites your wallet, just my 2 cents


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