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[heracles97]

Hey guys,
So I bought a set of 255/35/19 for the rear
PZERO

And a set of 225/35/19 for the front
Ironman (cheap brand )

Somehow I still experience traction control kicking in whenever I'm driving slow and or making turns ( not all the time but I'd say 40 % of the time )

I am completely clueless now..

No idea what to do.

Should I go back to Canadian tire and just cough up another set of 225?


Here are the dimensions of the rims
RIMS 269

Front:
19X8" offset +37mm

Rear:
19X9" offset +39mm



Any help would be appreciated! Thank you

[z3Ro]

Shouldn’t your sidewall in the front be bigger? Stock is 225/40 fronts and 255/35 rears

[madskillzE90]

What year and model

[martinm0]

You would want 255/30 for the rear.

Check out this excellent thread on XI staggered tire calculations:

http://www.e90post.com/forums/showthread.php?t=1050762

[heracles97]

Originally Posted by z3Ro

ShouldnÂ’t your sidewall in the front be bigger? Stock is 225/40 fronts and 255/35 rears

Yeah it should. But I assumed that 35 on both would work! And it is a 2010 BMW 335i e90 xdrive

[heracles97]

Originally Posted by z3Ro

ShouldnÂ’t your sidewall in the front be bigger? Stock is 225/40 fronts and 255/35 rears

Yeah! So assuming I get another tire with 225/40/19 should fix the issue? Does it matter if it's not pirelli?

[heracles97]

Originally Posted by madskillzE90

What year and model

2010 bmw 355i Xdrive e90

[martinm0]

Originally Posted by heracles97

Yeah! So assuming I get another tire with 225/40/19 should fix the issue? Does it matter if it's not pirelli?

No, that won't work either. You need to keep the rolling diameter within 1%. If you are looking to run 225/35 19 front and 225/40 19 rear, you have a difference in rolling diameter of -3.4% (I think I'm doing this right...). You need less than 1% difference front and back in order to not have issues.

Definitely read up on the thread I linked above (XI Staggered Tire Calculator). It will show you what you need.

Effectively, you should just buy the proper rear tire sizes to match the front, which is 255/30 19.

[heracles97]

Originally Posted by martinm0

No, that won't work either. You need to keep the rolling diameter within 1%. If you are looking to run 225/35 19 front and 225/40 19 rear, you have a difference in diameter of 3.5% (I think I'm doing this right...)

Definitely read up on the thread I linked above (XI Staggered Tire Calculator). It will show you what you need.

Effectively, you should just buy the proper rear tire sizes to match the front, which is 255/30 19.

Yeah I checked it out.
My issue is that I already have the 255/35/19

I can't return it :/


Would it work if my fronts were 225/40/19

Would it rub on the suspension? Is it doable?

thanks for the help!

[martinm0]

Originally Posted by heracles97

Yeah I checked it out.
My issue is that I already have the 255/35/19

I can't return it :/


Would it work if my fronts were 225/40/19

Would it rub on the suspension? Is it doable?

thanks for the help!

Sadly, I don't think it will work. It looks like doing 225/40 front will leave you at a difference of 4.2%.

EDIT: I must be wrong above. I think 225/40 should work. Not sure what I had in the calculator to get the 4.2%. Ah, I had 255/30 it seems. My bad.

I'm using this site to compare: https://www.tacomaworld.com/tirecalc...0r19-255-30r19

Look at the Revolutions Per Mile percentage which I'm focusing on. It's not exactly the same as rolling diameter, but I think it can help for specs not listed in the thread I linked before.

I also don't know if 225/40 19 will rub. I'm running stock 18" staggered myself. Sorry.

[martinm0]

Oh, and extra duh. We have fantastic tools right here on the site. Go back to the main page for Wheels and Tires and right at the top you have a more robust tire calculator/comparison tool.

[Antetokounmpo]

Originally Posted by heracles97

Yeah I checked it out.
My issue is that I already have the 255/35/19

I can't return it :/


Would it work if my fronts were 225/40/19

Would it rub on the suspension? Is it doable?

thanks for the help!

It will be perfectly fine as far as diameter differences are concerned. It will likely rub a bit though.