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

[bimm3r82]

tried to find my application but there is just so much info.. I have a set of wheels that are 17x7.5 et42 bore size is bigger and for the spacers they can be whatever they need to be cause im doing them in my machine shop.. I also plan on flattening the inside of the fender lip which is as far as i want to go with modifying the fender.. Im running the H&R sport cup kit as well.. now for the question I was wondering what is the largest tire I can run and what size spacer should be applied to it..?? The spacer will be hubcentric to the car and wheel which i assume is a must.. also how long of wheel studs.. Thanks!! :)

[noE30]

What size of adapter should i run if I wanted to run 5x120 et +25 15"x7" wheels. On my 89 325I.
Thanks

[lbreevesii]

I was looking at a set of these:


Team Dynamics Motorsports
16x7 +25

How will these fit with 205's or 225's? Will I need spacers?

I'd like something a bit bigger(without messing with the fenders) but the price is right and it gets rid of botltecaps on my is.

[Omaliyo]

Diamond Racing

wheels: 4 x 100
front: 15 x 8 +12
rear: 15 x 8 -12
tires: 155/60r15 Continental

Would they go well on the early model e30?

The car will be lowered on GCs soon

[Mystikal]

Thanks, would swapping to the 15x7 help any or not really?

Definitely. With the 15x7 you can get away with 225/50s with just a flat roll. 205s require no work.

[Mystikal]

I am also looking at:

front 17x8.5 20mm
rear 17x10 20mm

Would these need any spacers and or will they rub. What size tires would be best for this.

Thanks,
Jason

No spacers. Typical setup is 205/40 front and 225/35 rear. It's an extreme stretch, and you will need to have the rear quarters pulled a bit, especially on a late model.

[Mystikal]

i have a sedan and just picked up wheels 16x8 et0 and tires on them are 205 40 16 test fit them and looks way too small.
any reccomendations on which tires to run 215 45 16? maybe 225 50 16 rear
not really a fan of stretching

Tires any taller will require a lot of fender manipulation. Those wheels are just not made for an E30.

[Mystikal]

im interested in the new esm 002's
new sizes available are
17x8.5 et 15 and 17x10 et 20
obviously id need to roll, but would i need to default
to the agressive roll + what tire sizes should i go wiTh
Car is lowered 1.5"

As I just posted to the other inquiry, 205/40 and 225/35 with heavily rolled/pulled fenders (rear).

[Mystikal]

tried to find my application but there is just so much info.. I have a set of wheels that are 17x7.5 et42 bore size is bigger and for the spacers they can be whatever they need to be cause im doing them in my machine shop.. I also plan on flattening the inside of the fender lip which is as far as i want to go with modifying the fender.. Im running the H&R sport cup kit as well.. now for the question I was wondering what is the largest tire I can run and what size spacer should be applied to it..?? The spacer will be hubcentric to the car and wheel which i assume is a must.. also how long of wheel studs.. Thanks!! :)

235/40/17 with a 17mm spacer all around. I never seem to be able to memorize stud/bolt lengths, you'll have to search a bit for that.

[Mystikal]

What size of adapter should i run if I wanted to run 5x120 et +25 15"x7" wheels. On my 89 325I.
Thanks

Wouldn't recommend it, but 20mm with very small tires (185/55, 195/55).

[Mystikal]

I was looking at a set of these:

Team Dynamics Motorsports
16x7 +25

How will these fit with 205's or 225's? Will I need spacers?

I'd like something a bit bigger(without messing with the fenders) but the price is right and it gets rid of botltecaps on my is.

Up to 225/45 will work fine, no spacers needed.

[Mystikal]

Diamond Racing

wheels: 4 x 100
front: 15 x 8 +12
rear: 15 x 8 -12
tires: 155/60r15 Continental

Would they go well on the early model e30?

The car will be lowered on GCs soon

Just looked up the load rating of those 155s - had a good laugh. Don't even try to put those on an E30. I would go as far as using them on a MK1 VW of some sort, but our cars are just too heavy for a 74 load rating. Stay away.

Back the rears down to 0 offset and run a tire with at least an 80 load rating, bare absolute minimum.

[Stephen]

Those continentals youre looking at are made for smart cars. I have a pair on my aircooled.. Like Jay said, theyre not cut out for an e30. A 195/50 is cheap, will still be plenty of stretch and undersize, and you have more tires to choose from.

[mops]

Question to experts.
I got this setup (as below in the quote).
I noticed a bad handling characteristics. Basically when I'm breaking hard from high speeds, the car is wandering, quite abruptly, therefore constant steering input is required while breaking to keep it straight. It just doesn't feel very safe or nice TBH.
I suspect this is because front wheels centerline is now ~20mm outside (as opposed to stock bottlecaps), and because these tires have much more grip when breaking, I suspect this exerts significantly larger forces on the control arm bushing (I use urethane bushes), and in effect front wheel geometry is forced into toe-out situation under heavy breaking causing the described characteristics ?

Could anybody comment on my theory ? or perhaps confirm that with similar setup are getting similar behavior ? any other theories or perhaps hints on what to try to fix this issue ? I was thinking maybe solid buschings - not 100% solid but on which the movement is very restricted ?

Thanks,
Mops.

Hey guys.
Just wanting to say Big Thanks to Mystical for help and advise on wheel fitment.
As promised, long overdue pics of my setup. I'm very happy with it in terms of handling. Yes, I admit it could sit a bit lower. I'll try to organize 1" - 1.5" shorter springs. from outside it doesnt look like much, and that was exactly the idea. But from behind you see two meaty tyres... that smoke once turbo comes on boost.

Rear: 16x7.5 et35, 15mm bolt on spacer, T1R 225/45/16. Probably 245 wide would fit, not sure if they make some in that size 245/45/16? Otherwise will go for 225/50/16 next time. No clearance issues on the back. No fender rolling. [edit]This is pre-FL coupe chasis.


Front: 16x7.5 et 35, 20mm bolt on spacer (required to clear custom 'solid' calipers) , T1R 225/45/16. I passed technical inspection, but it was noted they are borderline in terms of sticking out of the fenders. No rubbing at full lock. I dont think 225/50/16 tyre would fit... I would have to try it on... MMMMAAAYYYBBBBEEE.


Thanks again guys.

[lifeiskaos]

What size tires would you recommend for 16x8.5 et 13 wheels in the rear with e30 m3 5 lug? Fenders can be rolled flat. Pricing and availability friendly preferred.