When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I just picked up a Cayenne Diesel with standard suspension (non-air ride).
I will be downsizing the stock 19"s to 18"s and looking to put some all-terrain tires on it.
What is the recommended widths and offset for running 18"s with all-terrain tires?
Thanks!
I just had my first offroading adventure on sunday and the cayenne did great. I happen to have carbon ceramic brakes so the smallest wheel I can run is 20". I run 265/50r20 tires and they just barely fit, I think they end up being like 30.6" in diameter. For 18" your best best would be 265/60r18. It ends up being only 3mm taller than my setup so clearance shouldnt be an issue, unless you have air and you always drive around in level 1. I drive around in "Normal" mode or level 2 now, the rubbing was very very slight, but with height adjustable airride why would I enable rubbing at all? Otherwise you should be good to go.
Whoops, didnt did the suspension comment. I think you should be fine for the 265/60r18 tires. The non airride Cayennes ride higher than "level 1" as far as I know, so you should be okay.
Whoops, didnt did the suspension comment. I think you should be fine for the 265/60r18 tires. The non airride Cayennes ride higher than "level 1" as far as I know, so you should be okay.
Thank you for the feedback on the tires. I will keep those in mind. I don't have intentions of modifying the suspension at the moment (don't want to risk Porsche voiding any future warranty claims that may arise).
I'm actually looking for help on ideal 18" wheel specs (i.e. widths and off-sets)
Thank you for the feedback on the tires. I will keep those in mind. I don't have intentions of modifying the suspension at the moment (don't want to risk Porsche voiding any future warranty claims that may arise).
I'm actually looking for help on ideal 18" wheel specs (i.e. widths and off-sets)
Ah i see. My current wheels are 9" wide and et55. Plenty of room on both sides of the wheels.
I'm going with the 255/55R18 Nitto Ridge Grapplers on my 2016 base Cayenne with non-air suspension. While I'm not looking to do anything extreme, I wanted the normal tire size to provide me more wheel travel without hitting fender wells like I would get on the taller tire profiles. FWIW, I'm using the stock 18" Porsche wheels.
I was able to fit 255/70/18s on the 958.2 with no rubbing. Had to adjust the caster a bit so it didn’t rub on the front plastic bits at full lock. Don’t recall the specific offset of the wheel but they are OEM wheels off of a 955 Turbo.
If anyone is interested in getting a set of 18" genuine Porsche rims, I have a set for sale in the Rennlist marketplace... with 255/55 tires. They didn't fit on my CTT, due to larger brake rotors in the front, so I had to end up buying a set of 19" rims. For sure higher profile tires will be better offroad, or on any bumpy terrain. Keep your 21" or 22" rims for street performance tires.
05-19-2020, 01:34 AM
What is the Ideal 18" Wheel Size for Off-Road Tires on a Cayenne Diesel?
