[Thetiko]

im a new member and I have been searching a lot about this, I just wanted to know what size set up should I run so I won't have any issues with the tranny, Help please

[Unspec]

Personally going with 255/35/20 and 295/30/20 front and back. Rear are a tad bigger than front but well within 1%, and rears tend to wear faster anyhow.

[Thetiko]

Originally Posted by Unspec

Personally going with 255/35/20 and 295/30/20 front and back. Rear are a tad bigger than front but well within 1%, and rears tend to wear faster anyhow.

And it doesnt affect tranny ? I was
Thinking
Front 255/35/20
Rear 285/30/20

[CanadianTSi]

The 255 295 setup is much closer in rolling diameter.

[Thetiko]

Originally Posted by CanadianTSi

The 255 295 setup is much closer in rolling diameter.

Is that what you are currently using?

[CanadianTSi]

Originally Posted by Thetiko

Is that what you are currently using?

Nope. I run a square setup.

[Thetiko]

that's why im a bit concern because ,my car came with square set up OEM 245-40-19 its a 2011 535i M sport AWD

[CanadianTSi]

As long as you keep the rolling diameter within 1% you will be fine. The 255 295 combo is only like .2% difference, where it is over 1% with a 285.

[cdmulders]

I have an xDrive and I'm running a staggered setup with 245/40/19 and 275/35/19. As mentioned, as long as the diameter and circumference difference between the front and back tires are less than 1%, you are OK.

The 245/35/20 and 285/30/20 tires have a .1% difference.
The 255/35/20 and 295/30/20 tires have a .2% difference.
The 255/35/20 and 285/30/20 tires have a 1.1% difference, which is probably too much.

Since you are looking at running wider wheels, the second option makes the most sense.

Use this calculator to compare different tire sizes:
Wheel & Tire size calculator

[Thetiko]

Originally Posted by CanadianTSi

As long as you keep the rolling diameter within 1% you will be fine. The 255 295 combo is only like .2% difference, where it is over 1% with a 285.

Excellent, will post some pics sometime this week, thanks

[slavisavov]

Did you end up with 295/255's. I'm planning to go with the same setup with the 343's for my x-drive and was wondering if you have any rubbing issues with the 295's

[Unspec]

No issues with the rear. The front is REALLY tight with the 255/35/20. To the point where I'm kind of worried if I need spacers at all.

[Thetiko]

So I end up using front 255/35/20 and Rear 295/30/20 I have not rubbing problems at all( I have stock suspension)

[slavisavov]

Looks amazing mate👍I'm definitely going with the same setup for mine as I'm with the stock suspension as well and loved the look of yours really! Thanks for the photos tho. Also I've noticed the 295 rears don't seem to look as bulky as PSS this size👍This is the look I was looking for anyway🤩

[Unspec]

Make sure to adjust the tire pressure accordingly. I went with 34 front and 37 back, but honestly I'm not 100% sure on what it should be. Anyone here go suggestions?

[Thetiko]

Originally Posted by slavisavov

Looks amazing mate👍I'm definitely going with the same setup for mine as I'm with the stock suspension as well and loved the look of yours really! Thanks for the photos tho. Also I've noticed the 295 rears don't seem to look as bulky as PSS this size👍This is the look I was looking for anyway🤩

Im glad you like it, and also glad that this post work for you as well