Originally Posted by Dougcjohn
Moosehead, can 17" be used on the WK2 or are the calipers to large?
In other threads, noticed some discussion on 275/45 or 285's on the 20". That would allow mild deflate if needed... but would think a gear change setup would be needed too. Any experimenting with these larger tires on 20"?
Calipers with the V8 are too large for 17's.
I too was thinking of the Blizzak's but read (on tirerack.com) that they are aren't the best for hot weather months - become too pliable, and we can get into the 100's in MD.
You could look at the Bridgestone Potenza's, Goodyear Eagle RS-A or the Kumo Solus. Really depns on your price range...
I feel the Fortera's are a good OEM tire for a Jeep... balanced blend of performance and ruggedness as well as a general aesthetic appeal as well as good treadwear. They will certainly satisfy 90% of buyers.
A tire size won't alter the speedo too much, but it will change. Just think of a new tire vs. one with no tread left (e.g., a tread depth of 15/32nd x 2 is nearly an inch). But, you can have the computer re-calibrated, my local Jeep dealership/off-road performance shop does it.
The bigger concern is the tire width. The knuckle assembly is very close to the OEM setup: the 10.43"wide tire and the backspacing/offset (whether 17", 18" or 20" OEM rim). So be mindful of that when selecting a tire and pairing it with a non-OEM rim.
Moosehead... Thought the stock 20" tires were a 265/50R20?