Comanchefire Posted March 20, 2011 Share Posted March 20, 2011 I'm assuming that with the long history of tire/suspension swaps you guys will have these answers readily available. :) I have an 86 x. 4x4. 1. Tirewise, how big can I go on the stock suspension? I have some 31 x 10.5's but I'm afraid that they would be too big. 2. If I go with a 3" lift how big could I go? Thanks in advance, Rob Link to comment Share on other sites More sharing options...
mnkyboy Posted March 20, 2011 Share Posted March 20, 2011 A lot depends on if you want to cut,you can get 33s on a stock truck if you cut enough. You can squeeze 31s on stock but they will fit perfect with a 3" lift. Link to comment Share on other sites More sharing options...
Eagle Posted March 20, 2011 Share Posted March 20, 2011 1. Tirewise, how big can I go on the stock suspension? I have some 31 x 10.5's but I'm afraid that they would be too big. 31 x 10.50s are fine if mounted on factory rims. There will be minimal rub on the lower control arms with stock rims. 2. If I go with a 3" lift how big could I go? 31 x 10.50. Unless you do more than just adding lift, all the same problems you face at stock height will still be there at 3" of lift. Link to comment Share on other sites More sharing options...
kyleag89 Posted March 20, 2011 Share Posted March 20, 2011 :hijack: Can you run 15" wheels with larger backspacing such as AR rims and 31x10.5 tires on a stock suspension with no rubbing on the lcas? Don't stock Jeep wheels have like 4.5" BS and most aftermarket wheels have 5.5" BS? Link to comment Share on other sites More sharing options...
Eagle Posted March 20, 2011 Share Posted March 20, 2011 :hijack: Can you run 15" wheels with larger backspacing such as AR rims and 31x10.5 tires on a stock suspension with no rubbing on the lcas? Don't stock Jeep wheels have like 4.5" BS and most aftermarket wheels have 5.5" BS? You have it reversed. The OEM rims have 5-1/4" backspacing. The most you can get in aftermarket is 4-1/2". That solves the LCA rubbing -- but then the tire are set farther outboard, so when the suspension compresses instead of the tire nicely tucking up inside the fender -- it smashes into the flare. If the flare is removed, it hits the steel metal and gets a nice cut. Obviously, you can then start cutting away, but the simple answer is that 31 x 10.50s on stock rims work best on OEM rims. Lift does not solve the fender interference problem with aftermarket rims unless you also extend the bump stops to limit suspension compression significantly. Link to comment Share on other sites More sharing options...
Comanchefire Posted March 22, 2011 Author Share Posted March 22, 2011 Eagle, I'd like to put my 31's on. What would I need for spacers to take care of the rubbing? I'd like to use the minimum to make it work. I don't really want to widen my stance. Link to comment Share on other sites More sharing options...
Eagle Posted March 22, 2011 Share Posted March 22, 2011 You don't need spacers. You'll lose 1/2 turn off the steering range. Translation: The steering in the MJ is 3-1/2 turns lock to lock. That means from center to either extreme is 1-3/4 turns of the steering wheel. It only rubs at the very extreme -- if you on;y turn the wheel 1-1/2 turns either way, it doesn't rub. I've been driving on 31 x 10.50s on stock rims, with no lift, for several years. No spacers, either. Link to comment Share on other sites More sharing options...
Comanchefire Posted March 22, 2011 Author Share Posted March 22, 2011 That's great for when I drive it but when I lend it out to my buddies to move a couch or something I'd like them to not rub it out. Would one inch spacers make the difference? Link to comment Share on other sites More sharing options...
mnkyboy Posted March 22, 2011 Share Posted March 22, 2011 Spacers will make the tires rub the flairs,you need to adj the steering stops out so the tires can't rub. Link to comment Share on other sites More sharing options...
Eagle Posted March 22, 2011 Share Posted March 22, 2011 Spacers will make the tires rub the flairs,you need to adj the steering stops out so the tires can't rub. Or install WJ lower control arms. They have a bend that allows the tires to turn fully without rubbing. Link to comment Share on other sites More sharing options...
Exgrayxj Posted March 23, 2011 Share Posted March 23, 2011 Just tried this Sunday, on my 90 MJ. Had a set of stock Jeep 15x7 aluminum wheels with 31/10.50s. MJ is all stock, no lift, nothing. Had 225/75s on it when I got it. Put the 31s on it, front and rear, no rub, no scrub, no pinch weld rub, nothing. Then put on a set of canyons (15x8) with 30/9.50s, still no rub or scrub. Will be looking for a new set of 31 to replace the 30s. and use the Canyons. Did have the Canyons and 30s on my XJ, same deal, no rub, except for lower arms at full lock, not a problem tho, just be a little careful. Never hurt the tires. MJ is a little higher, and will be getting some 1.5" wheel spacers for the rear, mostly for looks tho. :brows: And thinking about WJ lowers...not for tire clearance but for ride quality, the tire clearance is a bonus ;) Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now