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[CanadianTSi]

Originally Posted by E60525d

CanadianTSi Does your 335i have sport suspension or standard?

XDrive so I believe it should be standard.

[E60525d]

Originally Posted by CanadianTSi

XDrive so I believe it should be standard.

Thanks. That is my concern asd I have sports suspension which is 10mm lower so not sure if 235/45/18 would go on the rear without any rubbing.

I have done some research and found that 255/40/18 fits fine on the rear without issues.



A 235/45 tyre is 4mm bigger in radius than 255/40. So question is, will extra 4mm radius be ok or will it rub when vehicle is loaded with weight.

Any ideas?

[E60525d]

Anyone able to help?

Would a 235/45/18 work with sport suspension?

Essentially the tyre will be around 17mm further in the arch. I presume this will be ok as many people lower there car by more than this amount and have no issues?

You've been told a number of times that 235/45/18 is too tall dude...not sure who else you need to hear it from. IT WONT WORK!!

[E60525d]

Originally Posted by FCobra94

You've been told a number of times that 235/45/18 is too tall dude...not sure who else you need to hear it from. IT WONT WORK!!

No need for caps lock.


https://www.e90post.com/forums/showp...4&postcount=15

Yes, that is on a "lifted" Xi w/ taller struts, etc....totally different suspension than M sport.

[Soravia]

I'm going to put on 235/45/18 on my E91 xDrive, after doing research. I'll come back to show it works, just because someone used CAPs.
I plan to raise the car using coilovers anyway, so if it runs I'll tell you how high I went.
The car is 400 lbs heavier than E90 RWD 328i so it sits low from factory. I plan to load it so it needs to be raised for clearance.

[streetpro]

Don´t forged to come back :-)

[Soravia]

Originally Posted by streetpro

Don´t forged to come back :-)

Ordered. They are coming to the tire shop Friday. I should get my 18x8 M Sport (F30) done with coating on Friday as well. Should get them mounted on wheels on Monday or something.

But I'll actually do the install on the car another time. I'm really busy with work, school, family, etc. The cars don't get as much love as before.

Good thing I did all the mods on my Super20 Club before all this came.

I have a 5mm spacer on hand for test fit if there is rub without spacers.
I'm most concerned with the width of tires, offset of wheels, and the front strut body. The spring perch definitely clears with about 1" gap that will be filled 0.7" by the new tire (1.35" taller overall but half goes to ground).

If you have SPORT suspension, nothing is stopping you from replacing that OLD and BLOWN dampers with proper kit from www.MeisterR.com. Only for RWD. And you have to call for E90. Not listed on their US site but they have it all from E30 to E90.
Best part is $995 price shipped, with features from $1500 kits and billet aluminum one piece threaded body.

You can raise your car up to fit the tires that will fix the speedo, finally. You'll lost tiny bit of initial acceleration, but you can recover by using 16 lb 18x8 wheels from TireRack instead of 26-28 lb OEM 18x8 wheels.

I'm going with FEAL 441 they have xDrive setup and are quality stuff trusted by quality sellers. $1500 for kit with strut bearings, covers, and extensions.

[johnmyster]

i ran 255/40r18 rear with 245/40r18 front. This was with stock staggered rims.

I since got a second set of "front" rims and run 245/40r18 all around with 5mm spacers in back. Could do 10mm or more if you wanted.

The 245/40 rubs a little on the front at lock but a heat gun on the liner resolved. This is on a 2011 e92 sport suspension car.

Originally Posted by johnmyster

i ran 255/40r18 rear with 245/40r18 front. This was with stock staggered rims.

I since got a second set of "front" rims and run 245/40r18 all around with 5mm spacers in back. Could do 10mm or more if you wanted.

The 245/40 rubs a little on the front at lock but a heat gun on the liner resolved. This is on a 2011 e92 sport suspension car.

Yeah, that's an easy fit...you can even run a second set of "rear" rims up front if you want, or wider.

[Soravia]

Originally Posted by johnmyster

i ran 255/40r18 rear with 245/40r18 front. This was with stock staggered rims.

I since got a second set of "front" rims and run 245/40r18 all around with 5mm spacers in back. Could do 10mm or more if you wanted.

The 245/40 rubs a little on the front at lock but a heat gun on the liner resolved. This is on a 2011 e92 sport suspension car.

Thanks. I have 5mm spacer and 30mm bolts ready to go in my Amazon cart

Wheels are ready for pickup.

[Soravia]

Picked up the wheels. Mounting tires on Monday.

[Soravia]

235/45/18 Bridgestone Potenza Pole-Position S04 on 18x8 ET-34 Style 400 wheels, square setup on 328xi wagon, OE suspension at 60k miles and a bit of leak at rear dampers.

PLENTY of clearance. You can slap it on sport suspension for sure. No need for spacers. Goes lock to lock and goes over small driveway bump with steering turned.

You can see the gap between the strut spring perch and the tire. That's one thing that doesn't change regardless of how low or high the car sits on springs. So that's the most important clearance. Sport should clear that as well.

zero rub.
Instead of speedometer being 6.6% faster than GPS (80 MPH indicated is 75 MPH), now it is only 1% faster than GPS (80 MPH indicated is 78/79 MPH)

[weehe126]

So no rub on the fender liner when turning?

[Soravia]

Originally Posted by weehe126

So no rub on the fender liner when turning?

Nothing. You can see all the clearance

[weehe126]

Originally Posted by Soravia

Nothing. You can see all the clearance

The pictures do not show clearance when turned all the way.

[Soravia]

Originally Posted by weehe126

The pictures do not show clearance when turned all the way.

I just drove the thing around town, steering lock to lock as I roll in parking lot, speed bumps, and over driveway bumps. Not a single rub on liners when I checked after drive.
You're welcome to find out on your own if it rubs.
It's only 0.7" more on each side of the diameter and 5 mm more on the shoulders. OE left a giant gap.

If you have Sport or lowering bits, you might need to roll the inside edge of the top of fenders. The wider tires are pretty much at the edge of the fenders due to offset.

Just ordered Bilstein B6 aka HD dampers. Those have higher pressure than OE so they should lift the car up ever slightly so from current position with worn struts and leaking rear dampers.

[weehe126]

Your response made it seem like you had pictures showing the clearance to fenders at full lock. That is what I was responding to. While I'm glad it works for you, if you could post pictures of the tire to fender liner clearance on full lock it would help a lot of people.

Originally Posted by weehe126

Your response made it seem like you had pictures showing the clearance to fenders at full lock. That is what I was responding to. While I'm glad it works for you, if you could post pictures of the tire to fender liner clearance on full lock it would help a lot of people.

It doesn't matter either way...if you don't have xi struts, this fitment won't correlate to your RWD setup; clearance values will not be the same.

[Soravia]

Originally Posted by FCobra94

It doesn't matter either way...if you don't have xi struts, this fitment won't correlate to your RWD setup; clearance values will not be the same.

One can look at the current clearance to the strut and go from there. Add 5 mm to the side and 0.7" to the height. Fender liner clearance should be just about the same so long as the car is not lowered too much.
Yes, xDrive comes with "tall" suspension but it was already sitting low due to the wagon weight.

[weehe126]

Originally Posted by FCobra94

It doesn't matter either way...if you don't have xi struts, this fitment won't correlate to your RWD setup; clearance values will not be the same.

I'm not concerned with strut clearance, just fender liner. I just shoved my hand behind my 235/40/18 wheels at full lock and am pretty sure I don't have an extra 1/2" of clearance.