I just purchased a 2wd 84' Suburban C1500. Tires are iffy and they are passenger car tires. The max load weight on these tires is 1,700. I don't believe the previous owner towed anything heavy. I will be towing my 4Runner on my dual axle trailer. I am guessing the weight will be approximately 5,500 to 6,000.

I have been looking at getting some Uniroyal Liberator A/T's. Tire size 235/75R15. The max load weight is 2,205. (load range XL)

Will these be sufficient? If not what do you suggest?

anyone have an opinion?

What does your truck weight? Any tire that will support the truck and the tongue weight of the trailer will work. Pay no attention to the load range on the tire. Use only the max load rating in pounds. Keep in mind, the higher the weight rating, the stiffer the tire and rougher the ride at full pressure.

I can't say anything about those tires, but I love my BFG A/Ts (3415lb load rating). Their 235s are rated at 1985lb.

The higher the load range letter the stiffer the tire usually is. I'd look for an LT instead of a p series tires which is a little hard to find in a 235/75/5. Might not hurt to try and find a set of 16" wheels though if it's a 5 lug truck that might be a little more of a challange.

I just purchased a 2wd 84' Suburban C1500. Tires are iffy and they are passenger car tires. The max load weight on these tires is 1,700. I don't believe the previous owner towed anything heavy. I will be towing my 4Runner on my dual axle trailer. I am guessing the weight will be approximately 5,500 to 6,000.

I have been looking at getting some Uniroyal Liberator A/T's. Tire size 235/75R15. The max load weight is 2,205. (load range XL)

Will these be sufficient? If not what do you suggest?

Load range XL? WTF?

Ok I looked that up. Load range "Extra Load"...p-metric weirdness. The only thing I could find is they take 41 PSI...Shit the tires on my wifes Honda are rated 44 PSI. I guess they are load range XL too. :shaking:

Personally I think your a bit optimistic on your load capacity with that vehicle as it rolled out of the factory. A C1500 Max GVWR is 12k. That total weight of truck and trailer WITH THE RIGHT GEARING.

A 4Runner on a reasonably light 7K trailer is about 5600lb (see my sig). A Sub is an easy 6K with fuel if its optioned out. So if your 200lb then you can carry an additional 200lb of people cargo and tools and be at your max weight IF you have a 4.10 rear end. 3.73 rear end your down to about 10k max, 3.08 your at the weight of the truck plus 5 average weight passengers and a little luggage.


I'd scrap the stock rear axle if its a 10 bolt and at the very least find a 4.10 SF 14. That 10 bolt will not take it neither will the transmission with the stock gears if its anything less then 3.73. If you don't agree then see if you agree after your second or third 700R4.

I would also go to some better rims. Under rated rims can get you in just as much trouble as an under rated tire. Most factory steel 1/2 ton GM rims are stamped 40psi max. You can slap a set of Eagle MT classic knock offs rated 2500lb each that will handle the higher PSI for about $350 from 4 Wheel parts. Make sure you get the better valve stems for higher pressure. Load range E tires are 80 PSI and Load range D are 65. Thats a lot more then the standard valve stem is rated.

http://www.aewheel.com/wheels_detail.cfm?id=23

Towing a vehicle with that truck I would say you want a Load range D tire minimum. Personally I run nothing less then BFG or Michelin on my the vehicles I care about.

People have this idea that its cheaper to buy a cheaper tire.....its wrong. I am replacing the second set of tires that were ever on my 88 R20 454 burb. They are not wore out they are dry rotted. They have nearly 50k on them. The PO put them on at 35k after a blow out towing a 6k trailer. That truck spent most of it's miles with a 6k travel trailer in tow. Yeah they are $150 each but they will last double if not triple what those unicraps you are talking about will.

Towing that much weight is something you should consider dangerous and learn as much as you can and buy the best gear you can to make it as safe as possible.

I would also look at a weight distributing hitch as a must have on a C1500. The WD hitch, Better rear axle and gearing should get you reasonably save with that load with passengers and reasonable amount of gear.

XL tires are designed to carry their given load at 41 PSI - standard load (SL) tires are designed to carry the marked load at 35 PSI. Max pressure stamped on the sidewall is different than design pressures. the P235 XL's are about as high of load capacity you are going to get without changing size noticeably. LT235/75R15 LR C exist - but guess what, their load capacity (at 50 PSI) is 1985#.

Check your door plate and see what size & load range tires the truck originally came with. The tires originally installed on the truck will be sufficient for the GVW & towing capability of the vehicle.