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      03-31-2013, 03:41 AM   #1
Chujei
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Tyre size

Dear all,
I've ordered a set of 18" Forgestar F14 for my new Z4.
- 18 x 8.5 front
- 18 x 9.5 rear

Would anyone please give me some advise on the tyre size that fit for the wheels?
Would 225/40 front and 255/35 rear fit? Or should I go wider?
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      03-31-2013, 08:42 PM   #2
danielC
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From memory I had 245/35 and 275/30 on my 335... Im running 225/30 and 255/35 now and they are too small IMO
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      04-01-2013, 12:07 AM   #3
z4z4z4
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245/35-19 and 265/30-19 are what I run with 5mm spacers on all corners. I believe next time I'll go 275/30 for the rears.
You can check ~section width of the sizes above and compare how much extra clearance your 18s will have on wheels of the same width.
New wheels and tires are addictive. The Forgestars are very fine wheels. Enjoy!
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Last edited by z4z4z4; 04-01-2013 at 12:13 AM..
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      04-01-2013, 03:03 AM   #4
Chujei
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Thank you guys for your sharing.
Just two more questions:
- mine is only a 20i. Would the car have enough power to drive wider tyre like yours?
- if I stick with 225/40 255/35, would the rims wider than the tyre?
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