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225/40 is gonna give you a very small stretch on the rears. I think 245 is the recommended size for a 9, but I'm not positive. 225/40 is a good fit for the fronts


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Front wheel specs are fine with a 225/40/18, but I would not recommend that rear size. Technically speaking, a 225/40/18 can be safely mounted to an 18x9, but it's not going to look as squared off as the fronts would.

 

Thank you killerdisaster and kevin! Ive been doing some thorough research and found that people have mounted 225/40/18s on the rears and rolled their fenders.

Though it wont look as flush, i am still going to thoroughly enjoy these wheels on my car!

Thank you guys for your help!!

 

I just finished doing this to my sedan
245/40 out back and 225/45 up front
You will need to roll your rear fender. But you have to get all that sealer from behind the fender or the fendor won't roll flat (ask me how I know).
Im also waiting on my new shocks. I have 120,000 miles on my sport suspension. I rolled the fenders yesterday and didn't know about the dam gunk in there so now i have to get back in there and re roll.

 

ahhh interesting! thank you so much for the info~ thank god i haven't rolled the fenders yet.

 

I got a 325i non sport. On the rear i ran a 225/40 tire on the 18x9. it gives you a slight stretch and wont rub. the front will bolt right up with a 225/40 on the 18x8. but if you want to run coilovers the fronts wont fit without a spacer

 

Is that the car in the picture?
I don't think ill go anything under 245. I'm not into the stretch look. Hoping the shocks will help if not, either get a 245/35 or just sell the dam things.
Can you post up a pic?

 

I got my shocks in today and installed them. What a difference in handling and ride height. I have more clearance now. I took it for a spin around the block and it's way way better. Get a very little rub when going through a bump while cornering.
I'll post up more info tomorrow when I drive to work.

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Thank you mcm1209, but i agree with michalt on the idea of stretching a 225/40/18 onto the rears. I've seen it done before on other e46 sedans posted on other threads on other forums.

And thank you for the picture michalt, that is the look i am going for haha.

Wheels are coming in in two weeks-ish! ill keep you guys posted!

 

It actually doesn't look bad. I thought it would have been more stretched than what the picture shows.

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so a 255/35 tire is technically smaller than a 225/40 ( in height and sidewall but of course width is more) i wander if a 255/35 would work on my coupe. using a tire calculator at least...that is what is telling me. a 245/35 tire provides the biggest difference

i wish i had unlimited money to throw at this. then i could start with the widest tire and work down until something worked. dont want to play the guessing game with my money.

maybe the 225/40 would be the get it over with option.

 

i am trying to find the thickest tire that wont rub cause i like thick tires but dont want to end up having to buy more than 1 set because the first didnt work. what i do know though is that anything above 225 width you have to go 35 profile. a 40 profile above 225 provides very little difference in tire size.

so its either a 225/40
235/35
245/35
or maybe a 255/35

 

Why don't you go to a used tire shop and tell them you will pay them to test fit tires on your car.
I have done that before and for $40 they mounted and unmounted 3 sets of tires for me until i knew what size I wanted. Then just buy you new tires or get them used.
But make sure all your other things are taken care of. Shocks roll fenders etc....

 

I decided to just get 225/40 in rear. What i really wanted was the rim style and sitting flush. That size should give me grip. And then i am done. Sucks i rolled fenders though for no reason. Dont think i would need it with 225/40

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I guess because i am a regular at the local tire shop they did let me take them around to test.
But anyway post up pictures when you get it done

 

I also added a 15mm spacer to the front wheels.
Ill take pictures today after the car gets a wash. Been nasty down here for the past week.

 

I'm running m3 rears all around on a 325i sedan. I rub in the rear mostly because of how low the car is, and secondly how screwed up streets are here. I'm running 235/40 18 Falken fk452. I will have the same size tire but brand new in about a week. Also need to roll/cut rear fender. Fronts are no problem, in fact I needed them to clear the coilovers. I'll take some pics after new tires are on.


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Just put on 225/40/18 in rears. No rubbing at all on the way. Lots of room. Will update my thread with pictures. Very slight stretch.

Edit: my fenders are rolled.

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I'm a size queen so, no


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any pictures of this yet ??

 

 

I can go about .5" lower before rubbing when loaded down in the rear. Car feels really good at the current height. Tires are 235/40 all around, rolled rears, fronts fit fine.


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