I have a 92 xj with a Rubicon 2in BB, I was planning on putting 30s in but found a good deal on some 31s with rims, how extensive is the trimming that I would need to do and how would I do it?

 

Very easy, not to much to cut.
But also research bump stops because they will save you're tires and shocks.

 

For the front id cut the outline of the flare.
For the rear just pull your flares off, cut the first little lip off (about half an inch), then cut half inch slits up and bash them in. Comes out nice if you take your time.

 

Longer bump stops?

 

Yes longer bumps.
You can use hockey pucks for the front and make a spacer for the rear if on a budget.
Research cut fold rear.

 

I only trimmed to the "lip"

Added bump's and it's fine.
That's a 31/32 ish tire.

 

How would I use a hockey puck as a bump stop?

 

A hockey puck fits inside the front spring.
You can caulk it to the coil bucket, a hockey puck is 1" thick.

 

so it would be on the axle? and would it fit in the coil without taking it back out?

 

Ive also been wanting to trip the fenders on my 4 door. Im just not sure how much in the rear.

 

Trim the rear too much and you'll need a welder

 

idk about you but i seem to have way more clearance in the rear than in the front

 

Exactly this.

Do alittle at a time. Obviously you can always trim more later... But you can't glue part of your fender back on if you trim too much. Lol

On the rear make sure you make your vertical cuts in between the pinch welds... Do not cut through the pinch welds. You won't be a happy camper.

One more thing....
Do not pizza when you should french fry. Your gonna have a bad time!

 

sadly because of me waiting to long, i let the deal slip by, i might still put 31s on but am looking more into 30s, which i dont believe needs trimming i believe? and anyone have a opinion on general tires?

 

Im running 30x9.5x15 and a 2in boost and my tires rub in certain positions.. I tore off my front passenger fender flare today do to rubbing. General tires are good im running the mastercraft courser MT and they havent failed me yet.