I have purchased rims that are 20" and normally go with the 275/40/20 size tires, but I see the Audi Q7 for 20"s uses 275/45/20. I have a 2008 Base Model Cayenne and I just want to make sure the wheel well is filled in nicely while still giving the car a good ground clearance.

Any input?

Thanks!
Mikhail.

 

The 275/40/20 - is the smallest overall tire combo available for the Cayenne. in fact is smaller than the 18" and the 19" wheels & tire combo. I regret that I didn't choosed the 45 version like the Q7 has.

gl

 

Damn,,,,if i knew i could of went with the 45 series ,,,i would have ,,,,the tire guy said it would throw off my speedo if i went with the 275/45/20's

 

http://www.miata.net/garage/tirecalc.html

Yes, while your speedo reads @ 60mph, the actual speed is 62.3mph.

I don't see as a big deal, which I'm planning to go with 275/45/20 when the time comes.

 

To answer the Original Posters question... no. I actually upgraded to 20" GTS style wheels and ordered the Yokohama Parada Spec-X tires in a 275/40/20 since that is the size Porsche recommends... they installed a set of 285/50/20 by mistake. It had a major clearance issue with the upper ball joint mount in the front. The tire ended up rubbing against the ball joint stud below the nut. They re-ordered the correct size (was a warehouse shipment mistake) and no more clearance issues with the 275/40/20. Obviously the 275/45/20 works as well since many people use it but I think going to a 50 series tire or bigger for the 20" wheels is not a good idea. Just an FYI

David

 

Would 265/50/20 work???

 

why would you use 265/50 - thats not recomended.
If I were you I would go for what you have first started for and that's 275/45/20.

I use this one:
http://www.1010tires.com/tiresizecalculator.asp

 

stealth - what were your regrets on the 40 series vs 45??

 

my regrets are more about the potholes. here we have bumpy roads and sometimes I miss the 18" winter whells, or the former 19" summer wheels. though, I dont have air ride so that might explain part of that. and another thing is that I do like how the wheels look with the 45 cause it fills more of the wheel gap

 

I agree, I like how 45 fills up the wheel well bit more.

 

I had 40's on order but just called and asked for 45's. I was debating as the roads here can be a bit rough also.

 

you know that you have to post pictures of your truck with the 45's installed.

 

please post a pic of 275/45/20 on your cayenne if you have it

Thanks!!!!!!!!!!!

 

yes, pics pls

 

Rims and tires get installed tomorrow - and for sure I will post pics.