Re: 19" rim ?
ty166 said:
what is the safest diameter diffrence our trucks can run ? or must they be the same ? ive been looking at repop z06's on ebay , 9.5 front and 10.5 rears and want to run the fattest possible tire in the rear , the z06 would all be 18" rims ,but always wondered about size diffrence because of the awd. what tire combo would you suggest for a z06 set up , it seems you got the tire thing all figured out.
Well Jorgensen just posted this
jjorgensen52 said:
(the transfer case in our trucks can tolerate a maximum of about .2" difference between front and rear for any kind of duration)
Taken from here
http://www.syty.net/forums/showthread.php?t=44449
I've never read anything that had a exact number to it, so I would say this is probably pretty close. I know Subaru used to tell us that even tires that are the exact same size
must be within a 32nd or two. Now I'm pretty confident that is way too conservative, because I've seen people with Subaru's who never rotate their tires and have came in with completely bald fronts and 3/4 tread back tires and didn't have a issue. Now did this cause any damage to the transfer case, probably but this is also a extreme case of size differnece.
For tire sizes something quick I came up with is
Front: 265/35R-18 = 25.3
Rear: 305/30R-18 = 25.2
I'll see if I can come up with something else later.
EDIT:
If you want to push it you could do
Front: 275/35R-18 = 25.6
Rear: 315/30R-18 = 25.4 ( 315 does require a 11" wide wheel, but you could try it on a 10.5" )
or run the above 265 for a closer overall diameter.