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Hi, I think some people 'size up' from stock, but is there any problem going down in size?

The Porsche 19" wheel is 9.5 x 19 (275/45/19 stock), so fit to the wheel is ok, with slight speed difference. But is there a problem with fitting these tires on 04TT? I don't have TPMS. Thanks!

post-40239-041223200 1278464880_thumb.jp

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If it mounts up you may notice a small difference in the comfort of your ride -driving over bumps and maybe cornering a bit. Passengers probably wont notice it but I feel almost everything after Ive had a car for a while.

Also, it doesnt snow where I am and it hardly rains. That could be a big deal.

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One reason -- narrow tires excel in the snow. More weight focussed on a narrow rolling point equates to better snow/slush/mud traction compared to a wide tire with diffused weight over a broad area, that's a troublesome set-up in the snow.

The Porsche spec notes tires as narrow as 235mm acceptable for Cayenne (235/60 R 18).

And you can select your tire set-up via the on-board computer (this may be for tire pressure monitoring option only)

Attached from the '04 owner's manual.

post-41432-050014100 1279078438_thumb.pn

post-41432-029133600 1279078449_thumb.pn

post-41432-091169900 1279078668_thumb.pn

Edited by odix
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