I know the Transsyberia rigs ran this size tire. Looked like they did not use any fender trimming so it "should" fit.

Anyone actually running a set?

Looking to order winter or off road tires for my winter wheels and want something a bit taller.

 

I was thinking about doing the same, but you'd have to keep an additional spare in the back since the OEM spare wouldn't match anymore.

 

OEM spare?

I have the Bose sub and dual battery CTT, there is no spare! Mine came with a bottle of Porsche "fix a flat" and an onboard compressor.

 

You think I could run a bigger size tire on my 957?

I've got the 2005 18" Turbo Wheels for winter.

 

Bigger than 265/65/18?

 

Yes

 

 

LOL Nooooooooo!

 

I think the only reasonable next step to a bigger tire is to trim/remove the inner fender liners in the front and probably trim/remove the lower front bumper.

Anything bigger is also at the point of needing a gear ratio swap. Front and rear differentials would need swapped with an S/VR6/Touring Egg, etc depending on what you are starting with and what ratios you need to get.

 

Whether you "can" do it, and should do it, are two different things. It's a pretty big jump. You could probably go to 260 60R18 without problem. Why go 265/65? You're better off with full lock-to-lock turning radius and not rubbing under articulation - assuming you're off reading. If not, there's even less reason to chance rubbing and turning problems. If they will clear the fender wells, you will likely need spacers or at least new wheels with less set back to avoid rubbing.

 

.....and what is your experience with these sizes?

Just curious because I've been running the 265/65/18s for quite awhile now with zero issue. It was also the size used on the Transsyberia race Cayennes, that were not allowed to modify the suspension or body work.

So, just curious what you are basing your info on?

 

Two things: One disregard as I now see this is 2 years old. Two you're obviously (from your photo) running a modified suspension or have the air suspension set to the highest setting - both of which negate your question and/or the parameters of my answer. Glad it's working out for you either way. I raced these for over 5 years and under full articulation and/or locked steering at speed 265's usually rub too much with a stock suspension.

 

Raced them where? Pictures?

 

Mostly California, Nevada & New Mexico. But refer to my last first sentence. 2 year old thread. Additionally, the Transsyberia did not have a stock Cayenne suspension. It was a special suspension dedicated to the production Trans.

 

Riiiight........I know the thread is old. But I also started it so who cares?


What class, event are you racing these in?