Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: Jeepjedi on June 06, 2011, 07:36:34 PM

Title: Too big or at a squeeze
Post by: Jeepjedi on June 06, 2011, 07:36:34 PM: Ok I have messed up buying some 16" rims, who would think Jeep would use 2 stud patterns on a WJ?? wtf and why.

Anyway I am after a nice set of 17" all terrains and was looking at a set of BF Goodrich A/T 245/75/R17's. I have looked on the tyre calculator and these come out at 31.468", I have a basic 2" lift do ya reckon they will fit???
Title: Re: Too big or at a squeeze
Post by: Dutch on June 06, 2011, 08:15:05 PM: Quote from: Jeepjedi on June 06, 2011, 07:36:34 PM
who would think Jeep would use 2 stud patterns on a WJ?? wtf and why.

They don't.....what you have bought are Grand Cherokee ZJ wheels.

Grand Cherokee WJ's from 1999 - 2005 may have had different looking wheels through the years but they're all the same.

Both Grand Cherokees Yes........same car NO
Title: Re: Too big or at a squeeze
Post by: Jeepjedi on June 06, 2011, 08:54:00 PM: Have seen a WJ with the style of wheel I bought, thought is was safe to buy 8(
Title: Re: Too big or at a squeeze
Post by: Jeepjedi on June 06, 2011, 10:27:01 PM: Anyway back to me question 31.5 wheels 2" lift , will they squeeze on???
Title: Re: Too big or at a squeeze
Post by: Dave69 on June 07, 2011, 09:03:44 PM: have you looked on the us owners sites for inspiration
Title: Re: Too big or at a squeeze
Post by: Jeepjedi on June 07, 2011, 10:11:32 PM: I have seen a few ideas, my issue is I cannot go too far as I use this jeep for work, I am a railway signalling tester and spend much of my time at access roads either unmade or made from railway ballast, before this I would have had to drive on the motorway a couple of hundred miles. So an all terrain tyre is about my limit

I was intending to do a little green laneing too and I live in the middle of nowhere, do not intend to be housebound like I was in the snow this year, I didn't have the jeep then but is the best 4x4 I have owned and would like to give here the best chance on and off road
Title: Re: Too big or at a squeeze
Post by: Dutch on June 07, 2011, 10:31:54 PM: Well if you put it that way stick a couple of quality AT's on.

IMHO The WJ is good enough by itself to cope with what your planning to do.
Title: Re: Too big or at a squeeze
Post by: Jeepjedi on June 10, 2011, 10:09:01 PM: Yer was going for a bit of a look too lol I know, poser.

Scope for a nice set of AT is better on a 16"
Title: Re: Too big or at a squeeze
Post by: Bishops Finger on June 10, 2011, 11:04:21 PM: Go AT but dont discount quality MT's only a bit of road noise...
Title: Re: Too big or at a squeeze
Post by: williecba on June 23, 2011, 12:02:42 AM: Go to www.wjjeeps.com (http://www.wjjeeps.com) and search for wheels and they have pictures of all the different OEM wheels.

Went on the North American Grand Cherokee Association Website www.nagca.com (http://www.nagca.com)

Searching for information on WJ with 2"BB and 17" a member posts that on 17" rims a 265/65/17 will fit and a 265/70/17 will fit with rubbing.

Remember that 17" rims are 7.5 inches wide and 16" rims are only 7 inches wide.
If you had a bigger lift you might want the 17" rims which would allow a wider and taller tyre than the 16" rims would allow.

A 265/70/17 computes at 31.6inches with a bit of rubbing .

It all comes down to my bugbear; how high your lift is over stock height..
I reckon that with 2" puck on old tired springs you are good for 30.5inches ie 245/75R16
My personal theory is that if you had replacement springs 2" over you would be good for a genuine 31 inches and possibly 31.5"
i would love to be able to prove this. Buy 2" springs, 2 inch over shocks and a set of front and rear bump stop extensions. Then put a set of 31.5 inch tyres on; but I've already gone past that.