[sambonator]

I've researched this but haven't found a definitive answer.... are 255 front, 285 rear tires possible on 18 or 19 inch wheels with no rub? What offsets would work best for this setup? Lookig at ET35 front, ET40 rears... (in 8.5/9.5 widths)
This will be on stock suspension, standard alignment/camber.

Thank you!
Sam

[Jayyyrodd]

I'm currently running 275 on rear no rubbing whatsoever on 19x10.5 et 45 , slight stretch on the 10.5

[Jayyyrodd]

Ps I'm lowered slightly on h&r sport springs

[B58 parts]

I have 255/40/18 on 18x8.5 et38 all around, lowered about 2.5" .. absolutely no rubbing. I'm wondering if a 9" wheel could still fit up front as the tires bulge on the 8.5. I may also be adding spacers, 3 or 5mm up front, 12 or 15 in rear.

I don't like big wheels, 19s are too big. And there's already too much understeer .. a square setup is best IMO.


Also .. I think you're going to have to lower it. The wheel gap is going to be absolutely hideous with nice wheels.

[sambonator]

Originally Posted by Jayyyrodd

I'm currently running 275 on rear no rubbing whatsoever on 19x10.5 et 45 , slight stretch on the 10.5

Nice ride! Thanks for the info and pics!
Did you chose 275/30s or 275/35's?

[sambonator]

Originally Posted by YuminNuman

I have 255/40/18 on 18x8.5 et38 all around, lowered about 2.5" .. absolutely no rubbing. I'm wondering if a 9" wheel could still fit up front as the tires bulge on the 8.5. I may also be adding spacers, 3 or 5mm up front, 12 or 15 in rear.

I don't like big wheels, 19s are too big. And there's already too much understeer .. a square setup is best IMO.


Also .. I think you're going to have to lower it. The wheel gap is going to be absolutely hideous with nice wheels.

Thanks for that Yumin! Yes for handling I understand a square setup is preferred for neutral handling. But I do like the look of wide tires in the back (and front!)

Additionally track guys like 18's over 19's for lighter rotational mass (better braking, acceleration). You have a nice setup going 255 18's all around!

[kern417]

et35 front and et45 wheel it'll fit perfectly. I have et40 rear with a 275 tire and it fits well. There's a little room but I'm not sure if a 285 would rub or not.

For reference ray340i is running 295 rears. It's all about the offset. It just doesn't give the look people like because it won't be very concave.

[ray340i]

I would run such a big Tire on a 9.5 cause to the bulge

I have 19x9 et35
19x10.5 et 47
1.9 rear camber

255/35/19
295/30/19

H&r super sports with b8 shocks

For some reason the rear passenger side sits a bit lower on all super sports I've seen
Only rub with someone in the car on a pretty big dip , if I had hankook v12 I don't think I'll rub. The falken 453 have a big sidewall

[sambonator]

Originally Posted by ray340i

I would run such a big Tire on a 9.5 cause to the bulge

I have 19x9 et35
19x10.5 et 47
1.9 rear camber

255/35/19
295/30/19

H&r super sports with b8 shocks

For some reason the rear passenger side sits a bit lower on all super sports I've seen
Only rub with someone in the car on a pretty big dip , if I had hankook v12 I don't think I'll rub. The falken 453 have a big sidewall

Your car looks great on the 295's!
Reason I'm thinking 285 is that its the best height match for a 255 front and still go staggered. Additionally, I saw Tyre Reviews tested 285 30 19s on 19x9.5 ET48.
http://www.tyrereviews.co.uk/Article...wide-tyres.htm

So my only worry is the 19x9.5 ET40 which will stick out 8mm further than his setup...
Unfortunately he doesn't list what kind of wheels they were.

Wet handling is worst with wider tires, but superior everywhere else (wet braking, dry braking, dry handling).

[kern417]

Originally Posted by sambonator

Your car looks great on the 295's!
Reason I'm thinking 285 is that its the best height match for a 255 front and still go staggered. Additionally, I saw Tyre Reviews tested 285 30 19s on 19x9.5 ET48.
http://www.tyrereviews.co.uk/Article...wide-tyres.htm

So my only worry is the 19x9.5 ET40 which will stick out 8mm further than his setup...
Unfortunately he doesn't list what kind of wheels they were.

Wet handling is worst with wider tires, but superior everywhere else (wet braking, dry braking, dry handling).

Like I said my rears are et40 with a 275 tire and it is extremely close. You'll likely have similar results to Ray, i.e. it'll be good in most situations but with a full car/big bumps it may rub.

[sambonator]

Originally Posted by kern417

Like I said my rears are et40 with a 275 tire and it is extremely close. You'll likely have similar results to Ray, i.e. it'll be good in most situations but with a full car/big bumps it may rub.

Thank you Kern I'll keep that in mind.... now I just have to find a wheel set with ET45-48 rears that I like, and forget about the ET40 I had my eyes on...

[kern417]

Or do what I did and drop down to 245/275 tires. I also wanted 255/285 at first but I love the wheels I have and the front and rear rolling diameters match eachother. Even lowered I can't tell the difference in overall diameter. I didn't touch my ride height at all and they look the same from the side profile, even tho technically it's almost 1/2" less diameter.

Stock wheels/tires (26" diameter)


Aftermarket Wheels/Tires (25.6" diameter)

[sambonator]

Originally Posted by kern417

Or do what I did and drop down to 245/275 tires. I also wanted 255/285 at first but I love the wheels I have and the front and rear rolling diameters match eachother. Even lowered I can't tell the difference in overall diameter. I didn't touch my ride height at all and they look the same from the side profile, even tho technically it's almost 1/2" less diameter.

Stock wheels/tires (26" diameter)


Aftermarket Wheels/Tires (25.6" diameter)

Nice wheels Kern! Bet those cost a pretty penny...
Why did you decide to go with lower profile (245 40 18 / 275 35 18) instead of higher (245 45 18 / 275 40 18)? Your current setup looks great but I think I see more going with higher height to further fill the wheel wells...

[kern417]

Originally Posted by sambonator

Nice wheels Kern! Bet those cost a pretty penny...
Why did you decide to go with lower profile (245 40 18 / 275 35 18) instead of higher (245 45 18 / 275 40 18)? Your current setup looks great but I think I see more going with higher height to further fill the wheel wells...

Thank ya. Yeah they were hard to find haha.

I went down because it was closest to stock diameter. All of the speedometer, odometer, etc. readings are based on wheel and tire diameter. So if I was going to change it, I wanted to change it the least in order to minimize the effect on those readings. Also I wanted to keep the fender fitment as close as possible, and you can see from the pics it's even closer match than I expected.

Fronts:
225/45 = 25.9"
245/40 = 25.7" (-0.2")
245/45 = 26.7" (+0.8")

Rears:
255/40 = 26.0"
275/35 = 25.6" (-0.4")
275/40 = 26.7" (+0.7")

Also bigger diameters will raise the car, and I didn't want to change the ride height much if at all. From strictly a wheel gap point of view it might look nice, but I hate the lifted look of cars with wheels that are too big. I also thought it would make the 18s looks smaller by wrapping them in more tire.

Plus wider wheels and tires have a bigger chance of hitting the fender since it curves downwards, so a smaller diameter increases your clearance at the tightest spots.

So a couple reasons, thought not all helpful for you I suppose if you're on stock suspension. But I don't think the predicted benefit of bigger tires wheel be perceived when you put them on without lowering the car.

[James hunt]

nice ride!

[BAKKI]

Originally Posted by sambonator

Your car looks great on the 295's!
Reason I'm thinking 285 is that its the best height match for a 255 front and still go staggered. Additionally, I saw Tyre Reviews tested 285 30 19s on 19x9.5 ET48.
http://www.tyrereviews.co.uk/Article...wide-tyres.htm

So my only worry is the 19x9.5 ET40 which will stick out 8mm further than his setup...
Unfortunately he doesn't list what kind of wheels they were.

Wet handling is worst with wider tires, but superior everywhere else (wet braking, dry braking, dry handling).

sambonator Sorry to revive an old thread but I'm looking into this exact setup (255/35/19 x 285/30/19) for my F32. Did you ever find out if it works?

My rear wheels would be 19x10 ET37. You think this would be close enough to his 19x9.5 ET48?

[ECTO1]

255/35/19 works up front on a 9.5 wide wheel width offset of no more than +35 though as anything higher will contact the strut, can't say about the rear though as Im square all around.

[FastF30]

Originally Posted by ECTO1

255/35/19 works up front on a 9.5 wide wheel width offset of no more than +35 though as anything higher will contact the strut, can't say about the rear though as Im square all around.

I have xdrive/Mbrakes... I'm think'in 255/40/18 .... what rim and offset can I get away with? Look'in to go square...

[boiet671]

Hi! Got the same setup, 19x9.5 et35 255/35/19 square and my front wheels are touching the strut! Are you running any spacers? I’m on bcbr coilovers. Any info on this would help! Nice ride too!

Originally Posted by ECTO1

255/35/19 works up front on a 9.5 wide wheel width offset of no more than +35 though as anything higher will contact the strut, can't say about the rear though as Im square all around.

[Jk440i]

Tried searching but couldn't find anything on it.

Does anyone know if 275/40 rears and 255/40 fronts on 437m will work with f36 stock m sport suspension?

I know 35 works but wasn't sure if anyone had exp with 40 on this setup.

[J555]

Originally Posted by Jk440i

Tried searching but couldn't find anything on it.

Does anyone know if 275/40 rears and 255/40 fronts on 437m will work with f36 stock m sport suspension?

I know 35 works but wasn't sure if anyone had exp with 40 on this setup.

Absolutely no way. Both fronts and rears diameter is way bigger than maximum you can fit.