ASK ALL WHEEL/TIRE FITMENT QUESTIONS HERE - The Official Wheel/Tire Fitment Thread

[MatRacer]

I looked at the free space inside the wheel arch...

Front: there is about 25-30mm between the shock and the wheel. I guest I could easily run 25mm spacer. The problem is that when I completly turn the wheel to the left (for exemple) the outside edge of the tire is very very close to the firewall edge. in fact, there is some trace of contact... I will have to cut and weld if I want to keep those tire.

Rear: There is about 35mm between the wheel and the trailing Arm and maybe a bit less between the wheel and the shocks. I could also run 25mm spacer easely.


However, since the fenders are already cut and that already ordered my flares, i would like to keep it as wide as possible!

[Mfever]

Not a chance. You'd end up with 16x8 ET12, which is a very aggressive fitment. Even with a 205/45 tire you'd be very close to rubbing stock fenders.

oh man! i really didnt wanna roll my fenders, im too afraid the paint will crack since the car has original paint.

[mops]

There is a lot of room in the front fenders. You should be able to fit even the 25mm spacer. That said, I do not recommend 225/50/16 tires, especially when the wheel fitment is that aggressive. You WILL contact the fender.

Of the tires you listed, I admittedly only know maybe 70% of them. The Kumho KU31 is excellent though, if that's a resonable price buy it.

Thanks greatly for the help.
I went with your recommendation and fitted the following:
16x7.5 et35 all round
front spacer is 20mm, no spacer on the rear. 225/45/16 toyo t1r (best price/performance locally)

I'll try to post pics later

All though rear fits without spacer, it is noticable that front wheels are 'sitting wider' that rears. As in rear ones fit completely inside the guards, while front ones are just barely in line with top part of fender.

I'm wondering, whether it would be beneficial to fit rear spacer. I think with rolling the guards a bit, 20mm spacer *should* fit. Apparenlty that will give me some performance/handling advantage, as the rear wheels will 'sit wider'. I dont really care about the looks, but i'd like to know whether the 'performance' aspect of this claim is good...

You see before my car is road legal (local laws), we have to pass technical inspection, where all mods will be noted and from there on i cannot do any further mods. and wheel spacer count as 'mods', So i pretty much need to decide now whether to get or not to get rear spacers.

Thanks in advance,
Matt.

[BeirBrennerE30]

I didnt see this fitment listed...

'89 325 with e30 m3 5 lug... IE III

front 17x8.5 et12
rear 17x9.5 et24

What tires? how much fender work? how far will the wheels stick out past the fenders if at all?

bump

[NickL]

Looking for a recommended tire size for this setup.

17x7 et25 on an 87 325is lowered on IE StageIII's.

Ive heard 205/40/17 and 215/40/17 so I thought I could post here to snag some input.

Thanks a lot.

[Stephen]

15x6.5 et38

So 5mm to clear? I'm sure a bigger spacer would look better but 5mm doesnt need to be hubcentric its so small?


Edit:

Just picked these up. I know they're enkei's but cant find any info on em:

[optimusp517]

For euroweaves 15s, the typical tire size is 205/55-15 right? Would it hurt to go to 225 and if the car is lowered is there a possible chance that the 225 would rub the front fender lip?

[Mystikal]

Hi Jay,

Thanks for responding to my thread. Now to post on the correct thread :).

I am interested in getting the ground control coilovers with shortened housings and smaller spring perches. At full drop, what width / offset 16" rims & what tires can I run to maximize my contact patch without rubbing. (Rolled fenders ok).

ps: i don't know much about wheels / offsets etc so i may have some followup questions.

Thanks for your time! :D
-Aurash

16x8 ET20 with 225/45/16 tires is an easy to fit setup that requires only the most basic of fender rolling in the rear.

[Mystikal]

I didnt see this fitment listed...

'89 325 with e30 m3 5 lug... IE III

front 17x8.5 et12
rear 17x9.5 et24

What tires? how much fender work? how far will the wheels stick out past the fenders if at all?

The wheels will be slightly poking outside of the fenders. The M3 hubs' geometry pushes the functional offset 6-7mm lower, just for reference.

You'd need 205/40 front and 215/40 rear with rolled and likely pulled fenders (at least in the rear). It'd look truly aggressive though.

[Mystikal]

Hi!

Wow! Nice job answering all those questions!

Now, my question ;)

I bought a car that was already modified. It was a not finished project with some bizarre mods...

http://www.r3vlimited.com/board/showthread.php?t=131234

I have some keskin wheel:

front : 17x8.5 (I think ET20, I will check )Edited : ET30 with 235/45/17
Rear : 17x10 (I think ET20, I will check ) edited : Confirmed with 255/40/17

There is 35mm spacers all around and the fenders are already cut. I already ordered IE flares.

I drawn, in cut view (top half), the difference between stock (in gray) and keskin ( in black) on the rear. The inner side is on the left. In red is the hub. The 10in wheel is .62in wider on the inner side and 3.38in wider on the outter side. This is with 35mm spacer and considering et20.

I know that the tires are to big in diameter, but since this is a track oriented project, I dont really care. Bigger the better --> for grip...


What do tou thinks about this setup?

Will my wheel bearing last 2000km or 50000km?

Thanks!

Keep up the good work!

You don't need spacers that big, at least for clearance reasons. Those wheels will clear the inside just fine without spacers, it's just the massive tires that may be an issue. Still, I doubt you'd need anything more than 5mm spacers all around, if that much. Seriously.

Also, when you run spacers that big you are messing with the steering geometry in a very negative way. While I tell the guys that have casually driven street cars on here to run Et0 all day long, with a track car it's the last thing you want. The car will be twitchy and unpredictable. The fastest time attack cars in Japan have huge fender flares and zero or negative offset wheels, but even the professional drivers that pilot them say that they are insanely oversensitive to drive. Unless you're going for a national title in that thing (and you're not) stick to a wheel setup that maintains stock contact patch geometry. You don't need anything bigger than 5mm spacers, and if you do, run the smallest ones possible.

[Mystikal]

Thanks greatly for the help.
I went with your recommendation and fitted the following:
16x7.5 et35 all round
front spacer is 20mm, no spacer on the rear. 225/45/16 toyo t1r (best price/performance locally)

I'll try to post pics later

All though rear fits without spacer, it is noticable that front wheels are 'sitting wider' that rears. As in rear ones fit completely inside the guards, while front ones are just barely in line with top part of fender.

I'm wondering, whether it would be beneficial to fit rear spacer. I think with rolling the guards a bit, 20mm spacer *should* fit. Apparenlty that will give me some performance/handling advantage, as the rear wheels will 'sit wider'. I dont really care about the looks, but i'd like to know whether the 'performance' aspect of this claim is good...

You see before my car is road legal (local laws), we have to pass technical inspection, where all mods will be noted and from there on i cannot do any further mods. and wheel spacer count as 'mods', So i pretty much need to decide now whether to get or not to get rear spacers.

Thanks in advance,
Matt.

I'd buy the spacers for sure. From a function standpoint you quite honestly will not feel a difference, but just for looks sake you have to do it. Otherwise the unbalanced look will drive you crazy once it's too late to mod the car. :p

[Mystikal]

Looking for a recommended tire size for this setup.

17x7 et25 on an 87 325is lowered on IE StageIII's.

Ive heard 205/40/17 and 215/40/17 so I thought I could post here to snag some input.

Thanks a lot.

215/40/17. Room to spare.

[Mystikal]

15x6.5 et38

So 5mm to clear? I'm sure a bigger spacer would look better but 5mm doesnt need to be hubcentric its so small?


Edit:

Just picked these up. I know they're enkei's but cant find any info on em:

5mm is usually just small enough to work without vibration. But this also completely depends on the shape of the hubcentric ring or wheel hub.

And up to 25mm spacers all around will work fine with that wheel and 205 tires.

[Mystikal]

For euroweaves 15s, the typical tire size is 205/55-15 right? Would it hurt to go to 225 and if the car is lowered is there a possible chance that the 225 would rub the front fender lip?

225/50/15 is fine on those wheels. No rubbing on the front, the only chance is the rear on a late model car. You should be fine.

[MatRacer]

You don't need spacers that big, at least for clearance reasons. Those wheels will clear the inside just fine without spacers, it's just the massive tires that may be an issue. Still, I doubt you'd need anything more than 5mm spacers all around, if that much. Seriously.

Also, when you run spacers that big you are messing with the steering geometry in a very negative way. While I tell the guys that have casually driven street cars on here to run Et0 all day long, with a track car it's the last thing you want. The car will be twitchy and unpredictable. The fastest time attack cars in Japan have huge fender flares and zero or negative offset wheels, but even the professional drivers that pilot them say that they are insanely oversensitive to drive. Unless you're going for a national title in that thing (and you're not) stick to a wheel setup that maintains stock contact patch geometry. You don't need anything bigger than 5mm spacers, and if you do, run the smallest ones possible.

Thanks for the comments!

The tires are to big, with 35mm spacers in front the tire is rubbing against the firewall. I was going to cut and weld, but I will try the wheel without spacers. Mayby it wont rub since the tire will be further inside the car.

I will also try to to stop my fenders order...:?