How much Trimming for 315s with 2.5 OME

[elhombre]

I have searched and have not been able to find anything on someone putting 315/75/16 on stock rims under a 2.5 OME lift only. I'm going to put lockers and gears in a 97 real soon and I have no problem cutting into the body to fit the big tires under it. I guess I would possible need to put larger bumpstops in it. I have read and re-read Slee's articles where he has had to use spacers along with the lift to make these tires work, but he has driveshaft problems. I say this because he has had to change the trailing arms to make it work. I am looking for the greatest amount of ground clearance without gettting into the expensive driveshaft situations. Are the tires too big and are they going to rub on the inside of the fender well where I can't do any sheet metal cutting? What size and where would I get a longer bumpstop to make this work?

I am aware that bumpstops will limit suspension travel but a smooth riding rig without driveshaft problems is more important to me.

I sold my 98 taco and bought a 97 80 about 5 months ago because my old lady insists on bring my 2+ year old daughter on vacation with us now. I still think that our two dogs are much more capable at babysitting than she realizes. Anyway, Thanks for the previous information I scammed off this great website before, and thanks in advance for any help you can offer me now.

 

[green_machine]

quick answer? none if you weld on some stop spacers to the axle.

 

[Nay]

Are you willing to take off your flares? What kind of bumper solutions are you considering?

Here is what the wheel wells look like on 2.5" of lift with 33" trxus and no flares.

Nay

 

[landtank]

I ran that setup for years but only did mild wheeling and I wasn't completely loaded with winch and such. Bolt them on and adjust as needed.

 

[green_machine]

the issue is the inner fender well under forced articulation, in the rear. If you aren't really crossed-up in a rock garden, you won't notice it.

j

 

[Bob_Garrett]

I ran 315 MTRs for about a year with 2.5" OME + 15mm packers in the the front. I had the same rubbing on the rear that z80 mentioned. Nothing serious though, just had to hit the frame rail and inner fender with a shot of rustoleum after each wheeling trip.

 

[Tools R Us]

I ran 315 MTRs for about a year with 2.5" OME + 15mm packers in the the front. I had the same rubbing on the rear that z80 mentioned. Nothing serious though, just had to hit the frame rail and inner fender with a shot of rustoleum after each wheeling trip.

My brother ran 315 Nittos on his stock truck for a while, when we put the Js on the 2" rear bump stop drops stopped the rub. They fit with no issues other than the above mentioned rub on the inside of the fender well. A small wheel spacer on the rears, 1/4-3/8"? may solve it without having to space the stops?

 

[Hants]

Is the rubbing on just one side? If so, would re-centering the axle solve it?

 

[Tools R Us]

They rub on both sides. The big issue is the power loss if not regeared, some don't mind it, others can't live with it.

 

[alkaline747trio]

Do you mean that you could run 315s on stock springs with wheel spacers and maybe not get rub, or did it rub like hell and the J's need the spacers.

 

[Tools R Us]

Do you mean that you could run 315s on stock springs with wheel spacers and maybe not get rub, or did it rub like hell and the J's need the spacers.

My answer is maybe! We didn't try to cure the rub stock, jacked it up and put the Js on, the bump stop spacers needed to protect the shocks cured the rub. The interference is between the inside sidewall of the tire and fenderwell when flexed, from the tire being slightly too wide. So slightly spacing the wheel out may cure it or reduce it to acceptable levels? But with 3FE power, your top speed would be what 45 MPH?

 

[alkaline747trio]

Top speed is already 45mph, new top end would be 50mph, but it would take me 8 miles to get to 45mph instead of the usual 5.

 

[Walking Eagle]

? What size and where would I get a longer bumpstop to make this work?

I am aware that bumpstops will limit suspension travel but a smooth riding rig without driveshaft problems is more important to me.
: [/SIZE]

Theoretically, if you use the same 2" spacers that slee does on his 4 and 6 inch lift, you can run just as big of tires without rubbing at full compression. Aka, 2" bumpstop spacers will let you run the 315's. Since your 2.5" over stock, and lower the bump stops 2" you will have .5" more uptravel than stock. Only downside is you'll be wasting 2" of shock travel. Correct that with L shocks (they'll work with 2" bump stops, just like all the other lifts using them), and you'll get more down travel than you have now. Or you could just drop the shock mounts 2", though that might be more work than its worth with L's available.

 

[elhombre]

I am wanting to run BFG A/T on the rig because my past two sets of BFG M/T's on my taco proved not to last too long, and the sand of Utah canyonlands slowed the truck down. BFG makes a 315/75/16 which is reported to be just under 35 inches tall. The tire guide says they are narrower than other true 35 inch tires. Has anyone tried my idea with the BFGs?

The inner rub is unacceptable becaused the truck will see rock on Elephant Hill and throughout the Maze trails. These trails will cycle the suspension with all my crap, gas on the bumper, and 12 gallons of water and full Ice chest of adult beverages inside. Anyway, my rig will be heavy, but this ofcourse is exactly why I bought a LC.

Are 1/2 inch spacers at the wheels going to mess with the truck bearings or is there no acceptable wheel spacer?

 

[MoJ]

quick answer? none if you weld on some stop spacers to the axle.

Extend the bump stops - no welding needed.

 

[Bearcat80]

You must have a turbo...

Top speed is already 45mph, new top end would be 50mph, but it would take me 8 miles to get to 45mph instead of the usual 5.

With 285's I've become much more patient.... with 315's I would not be able to tow the boat with out regearing. Offroad shouldn't much matter tho... unless you try to keep up with the buggies on the boulders...

 

[Bob_Garrett]

Adding 1" wheel spacers will eliminate the rubbing in the rear. However, the fronts will rub occasionally on the front edge of the inner front fender.

 

[Tapage]

With 285's I've become much more patient.... with 315's I would not be able to tow the boat with out regearing. Offroad shouldn't much matter tho... unless you try to keep up with the buggies on the boulders...

I thought with 315 4.88 R&P it's mandatory.

 

[landtank]

I thought with 315 4.88 R&P it's mandatory.

Not at all. I ran 315s with stock gearing for quite awhile. I even towed a 3500lb camping trailer up through the white mountains. It's a lot nicer now with the 4.88s but not mandatory.

 

[Jason Andrews]

I am wanting to run BFG A/T on the rig because my past two sets of BFG M/T's on my taco proved not to last too long, and the sand of Utah canyonlands slowed the truck down. BFG makes a 315/75/16 which is reported to be just under 35 inches tall. The tire guide says they are narrower than other true 35 inch tires. Has anyone tried my idea with the BFGs?

El hombre, I had the 2.5"OME+ 20mm spacers up front and 10mm in the rear, and ran 35x12.50x15 bfg muds on 15x10's and would rub a little in the rear, never broke off a fender flare. I do not have a rear bumper or any extra weight. You hafta cut the front mudflaps up a little but then just figure out what size bumpstop spacer you need after you put the tires on and ramp it. YOu do not need to get new control arms to make it work.