Hi Guys,
I have just purchased some Z4M alloys which have 255/40 18 tyres on the rear. My mate mentioned he might have some new ones that had been ordered incorrectly at work and that i could have them for cheap. The problem is, they are 255/45 18, so i am just wondering if there would be a problem if i fit these?
Cheers
Neil
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Tyre Profile
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- Lifer
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Re: Tyre Profile
If it's not for an ///M then 255/40r18 is the wrong size anyway, and you should be using 255/35r18.
The difference between an OEM 255/35r18 and your mate's 255/45r18 is about 8% (which is a lot), and your sidewall will be 15mm taller than standard so may cause rubbing.
The difference between an OEM 255/35r18 and your mate's 255/45r18 is about 8% (which is a lot), and your sidewall will be 15mm taller than standard so may cause rubbing.
- WLH
- Lifer
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Re: Tyre Profile
255/45 18 will almost for sure cause rubbing issues. Those tire will have an overall diameter of 27" where the car is designed for a 25" diameter tire.
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- Member
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Re: Tyre Profile
Yeah it's not an ///M that i have, just a standard 3.0.
Thinking i should maybe give them a miss then, as they are currently slightly bigger than what i should have. So to confirm, i should have 255/35r 18??
Cheers
Thinking i should maybe give them a miss then, as they are currently slightly bigger than what i should have. So to confirm, i should have 255/35r 18??
Cheers
- LeeME3
- Member
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- Joined: Sat Jun 25, 2011 11:09 am
- Location: Lincoln
Re: Tyre Profile
I'm running 255/40 and wouldn't want to go any more than that (on a 3.0i)
2003 Z4 3.0i
Done: DIY Aux cable, stubby, sound generator foam delete, gaptech, brodit pro, M wheels, ditched RFTs
To do: Steering wheel audio.
Done: DIY Aux cable, stubby, sound generator foam delete, gaptech, brodit pro, M wheels, ditched RFTs
To do: Steering wheel audio.