Tires size - m sport suspension

M

mck159

Member
Hello,

What is the right tires size for Z4 E85 3.0i 231HP with S704A M Sports suspension? I found two answers over the Internet: 225/45r17 for both rear and front or 225/40r17 for front and 225/35r17 for rear.

Btw. anyone has experience with XL (extra load) Michellin PS4 tires? They are a little bit cheaper in my country
 
Not so sure about the sizes on your 17's, but the XL rated PS4 tyres are amazing and one of the top tyres on the market so id definitely go for those if you can :)
 
I think you’re misreading the rear tyre size.

The options should be something like:
  • a ‘square’ set up - so 225/45r17 all round, or
  • a ‘staggered’ set up - so 225/45r17 front and 255/40r17 rear

I also agree that you’ll not be disappointed with the PS4, and the XL is only slight stiffer than the non-XL ones. If they’re as hardy as the PSS they’re partially replacing, and you drive in a sporty manner, then in my experience you can get over 20,000 miles out of the rears, and double that out of the fronts.
 
XL will be better than non-XL ones? It's about 10$ difference on each, so it doesn't make a big difference

Will staggered set up be much better than square one? Square one has this advantage that I can switch rear with front each year as rear will wear out much faster with my style of driving :)
 
mck159 said:
XL will be better than non-XL ones? It's about 10$ difference on each, so it doesn't make a big difference

Will staggered set up be much better than square one? Square one has this advantage that I can switch rear with front each year as rear will wear out much faster with my style of driving :)
Click to expand...
Depends on your wheel sizes, 255 on an 8" wheel will be too big, 8.5j minimum
 
philbo909 said:
mck159 said:
XL will be better than non-XL ones? It's about 10$ difference on each, so it doesn't make a big difference

Will staggered set up be much better than square one? Square one has this advantage that I can switch rear with front each year as rear will wear out much faster with my style of driving :)
Click to expand...
Depends on your wheel sizes, 255 on an 8" wheel will be too big, 8.5j minimum
Click to expand...

I'm planning to buy 225/45r17, I misread it and though it was 225/40r17 :)
 
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