35X12.5 R17 Tires with 2 inch level kit install

[MichaelOverfield]

I just installed a set of Laufenn X FIT AT LC01 LT35/12.50R17 121S Tires I found on Amazon for only $180 each. This is a Hankook brand, so I felt should be a quality tire. They were easy to balance, so that is a good sign. The seem quieter than even the General Grabbers that they replaces, surprisingly. With the 3.73 axle and G56 the ratios seem to work quite well with these larger tires. It puts a normal highway RPM at about 1600-1700 down about 400 from the stock size tires. Before these I installed a 2 inch level lift, new front springs, and air lift kit on the rear. With that was Freedom Offroad longer control arms (1/2"). Uppers were fine, I do NOT recommend the lowers due to my need to do an modification to attain proper Cam bolt torque, but I was able to make them work.. The rims are Pro Comp Alloys series 01, 17x9" 8x156.1mm. These I had installed on the previous set of stock sized tires, they have an offset that pushes the tires out beyond stock, but I can't seem to find the exact number. At least an inch or so (this caused me to put the fender flares on to keep the tires under the fender and legal). I had to do minor inner fender and lower plastic air dam trimming to prevent rubbing with full turns and suspension travel. I also installed sumosprings to replace the stock bump stops. These are quite a bit longer, but also softer. Pictures attached. For the control arms debacle, I have a separate post on that issues on a different thread.

 

[MichaelOverfield]

Here is the tread on the control arm saga: https://www.turbodieselregister.com/threads/front-axle-control-arm-replacement.270995/

 

[Ozymandias]

The ET is normaly embossed on the inside of the wheel together with the other numbers.

 

[AEdelheit]

Just looked on Pro Comps website , stock offset is +44mm so there is a 50.6mm difference.

• Wheel Size: 17x9
• Bolt Pattern: 5 on 5
• Offset: -6.6
• Backspace: 4.75
• Finish: Gloss Black with Accents
• Max Load: 2200
• Lifetime structural warranty

 

[Ozymandias]

Is 2200 not a little bit low as a weight rating for a full size truck with a 7000lbs rear axle?

 

[AEdelheit]

Is 2200 not a little bit low as a weight rating for a full size truck with a 7000lbs rear axle?

I just noticed it also says a 5 on 5 bolt patternt, think I copied the wrong one, let me look again.


Same offset but 3420lbs load rating.

• Wheel Size: 17x9
• Bolt Pattern: 8 on 6.5
• Backspace: 4.75
• Max Load: 3420
• Finish: Gloss Black with Accents
• Offset: -6.6
• Replacement Center Cap Part Number: PXA7515041

 

[Ozymandias]

Still on the Edge but okay I think.
Love my 4500lbs Methods.

 

[MichaelOverfield]

I just noticed it also says a 5 on 5 bolt patternt, think I copied the wrong one, let me look again.


Same offset but 3420lbs load rating.

• Wheel Size: 17x9
• Bolt Pattern: 8 on 6.5
• Backspace: 4.75
• Max Load: 3420
• Finish: Gloss Black with Accents
• Offset: -6.6
• Replacement Center Cap Part Number: PXA7515041

Thanks, that looks about right. The wheel load rating is more than the OEM tires/wheels. It's also more than the new tires load rating.

 

[Regcabguy]

Still on the Edge but okay I think.
Love my 4500lbs Methods.

Geez they've gone up since the WuHan flu took over the world.

 

[cerberusiam]

Tire not heavy enough for the weight of the truck, they will probably cause vibe issue as they get a little older. Minimum weight rating to keep the sidewalls from breaking down is 3600 lbs, if you tow then 3800-4000. Not enough back space, the tire track geometry is off and now it wears hard on the ball joints and steering joints. 5.75 or 5.5 would have been ideal, little to no trimming depending on suspension travel. Would not have needed flares but they would help keep the road garbage off the body.

 

[MichaelOverfield]

Tire not heavy enough for the weight of the truck, they will probably cause vibe issue as they get a little older. Minimum weight rating to keep the sidewalls from breaking down is 3600 lbs, if you tow then 3800-4000. Not enough back space, the tire track geometry is off and now it wears hard on the ball joints and steering joints. 5.75 or 5.5 would have been ideal, little to no trimming depending on suspension travel. Would not have needed flares but they would help keep the road garbage off the body.

The OEM Load rating tire was also 121, thus these match the OEM tire weight rating, are you saying the OEM got it wrong? The previous tires were OEM size and ran on these rims as well until they wore out/aged out, though the truck is still low miles, I have not had issues yet with ball joint or steering issues. Winter studded snow tires are stock size, on stock rims.

 

[cerberusiam]

121 rating is only about 3300 lbs. No, that is not adequate with the current tire construction, need a 126 or greater to get good wear and usage. Yes, factory almost always puts cheapest tires possible on the truck.

 

[MichaelOverfield]

121 rating is only about 3300 lbs. No, that is not adequate with the current tire construction, need a 126 or greater to get good wear and usage. Yes, factory almost always puts cheapest tires possible on the truck.

Interesting. I guess it depends on how many miles you drive on a set of tires, since it's not my daily driver, and very low miles, I generally replace by age, before they wear out, and I have a set of winter tires which makes the miles even less. 3300 x 4 is well over the allowed axle and truck weight rating. The OEM tires were Michellin of some sort. The next set were Generals of some sort with OEM size/rating. For my use I didn't see issues with them, but could be due to my low miles driving profile, I guess.

 

[Regcabguy]

I've run 35-12.50-17 Toyo AT2's for yrs now. My rear axle weight is 4000#,front is 4400# with my 2200# wet popup. That being said a little extra capacity would be nice.