17" b8 alloy wheels

[WOLFSBURG-PD]

Hi folks

Does anyone know how wide this wheels are? I'm due tyres and was thinking of replacing with the 225/50 tyres with 235/40, but think that those wheels would need to be at least 7.5 wide?

Thoughts?

Thanks uploadfromtaptalk1391605049826.jpg

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[kite]

Is the wheel size not on the tyre pressure sticker inside of the drivers door.

bloody smart phones....

[WOLFSBURG-PD]

Good thinking batman! Will check when I'm back home, if they are 7.5 you think they are wide enough for 235's? I know the monte carlo alloys on the b6 sport passat have 235's not sure how wide those wheels are though

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[kite]

No Idea sorry.

bloody smart phones....

[WOLFSBURG-PD]

Checked the sticker on the door as suggested but it doesn't spec how wide the wheels are just gives different tyres/wheel combinations and their respective pressures, does anyone know the official name of that wheel? Might see if dealer can tell me, interestingly I decoded the sticker in the boot and seen that my car actually came with "18 alloys 235/40, so previous owner swapped them out

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[Sam]

Do you have the part number?

[Phil K]

I expect your local tyre fitter will know what's best for your size wheel...

You're only adding 10mm to the tyre width (5mm each side obviously) so I don't think it will cause a problem. The side wall will also increase slightly but only by a small amount and I doubt it would be enough to throw the speedo out.

[Soot1e]

By dropping to a 40 section tyre the overall diameter of the wheel/tyre combination will reduce, this will have an adverse effect on your speedo reading. Use the link to see the difference.
Tire Size Calculator - Compare Two Sizes

[Phil K]

Oops I missed that you were planning to reduce the profile - Soot1e is absolutely right, you need to keep the same rolling radius!

[WOLFSBURG-PD]

Thanks for the info guys, that's a handy site, and suggests that if my car came with 235/40/18 alloys originally according to its options sticker, then on its current wheels 225/50/17 the speedo is actually reading 2% faster as it is! Convincing enough argument for a set of new wheels!

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