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      07-29-2013, 04:29 AM   #1
phil200tdi
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265/30/19 or 255/35/19?

I am looking at new rear tyres.

I'm currently running Avon ZZ3 265/30/19's and want to get Avon ZZ5's next time round. They only make the ZZ5's in 255/35/19.

Will these fit? I gather they are a slightly larger rolling radius.

I'm also hoping a slightly higher sidewall will improve the ride - may be dreaming...
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      07-29-2013, 06:30 PM   #2
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Anyone?
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      07-29-2013, 06:33 PM   #3
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I am running with 255/35/19 and I would say the ride is very good. The tyres are conti sport contact M3s.
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      07-30-2013, 01:37 AM   #4
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Cool thanks!

I'll get those ordered now.
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      07-30-2013, 04:39 AM   #5
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How do you get the speedo re-calibrated for the larger tyres?
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      07-30-2013, 06:25 AM   #6
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Quote:
Originally Posted by djgandy View Post
How do you get the speedo re-calibrated for the larger tyres?
Given the small difference and allowing for margin of error, I don't reckon it's worth it. The speedo seems to match up perfectly with the radar warnings I drive through in little villages.
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      07-30-2013, 08:23 AM   #7
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Given the small difference and allowing for margin of error, I don't reckon it's worth it. The speedo seems to match up perfectly with the radar warnings I drive through in little villages.
Yeah I guess it is only 2-3% if that. I am wondering myself whether tyres with a bit more profile on them would be better. 255/30 is pretty ridiculous really
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      07-30-2013, 01:18 PM   #8
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Yeah I guess it is only 2-3% if that. I am wondering myself whether tyres with a bit more profile on them would be better. 255/30 is pretty ridiculous really
Absolutely. I am running 225/40/19 and 255/35/19. I like it, but then I haven't experienced the stock tyres...the car came with these tyres on.
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      07-31-2013, 05:47 PM   #9
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Hi,

I was asking my self the same questions when i was deciding to increase to a 265 from a 255.

I went from Bridgestone (255 30 19) run flats to michelin pilot sports (265 30 19)

The diffrence was incredible.

But anyway here is a online tool I used to compare the different tyre sizes and how much your speedo will be out at a given speed.

http://tire-size-conversion.com/tire-size-comparison/

Hope it helps

ShaQ

Last edited by Shaq; 07-31-2013 at 05:48 PM. Reason: Link
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      08-01-2013, 03:12 AM   #10
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Surely most of your difference was due to not using run-flat rather than the size change? Adding 10mm width only adds 3mm to the sidewall. Going 255/35/ adds a full 13mm! Useful link though
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      08-01-2013, 08:19 AM   #11
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Useful thread I think I'll go with a 225/40 and 255/35 when I change tyres next.
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      08-01-2013, 08:38 AM   #12
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Useful thread I think I'll go with a 225/40 and 255/35 when I change tyres next.
Has anyone done the above with 225M's? I'd be interested to see how the slightly bigger tyres look.
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      08-01-2013, 03:00 PM   #13
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Has anyone done the above with 225M's? I'd be interested to see how the slightly bigger tyres look.
Yeah I have 225Ms, check my threads out for pictures.
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      08-01-2013, 03:30 PM   #14
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cool. could you get some more just of the tyres and clearances. I may do this when I replace mine, really would like a bit more sidewall, the roads are so bad these days it can't be a bad thing.
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      08-01-2013, 03:41 PM   #15
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Quote:
Originally Posted by djgandy View Post
cool. could you get some more just of the tyres and clearances. I may do this when I replace mine, really would like a bit more sidewall, the roads are so bad these days it can't be a bad thing.
Not at the moment I'm afraid - I've got 313 reps on while the 225s are being straightened.
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