Guys,

Mounted a set of 4 ply tires on my 2005 Dodge Ram 2500 QuadCab Hemi (265/70 R17 Firestone Destination AT). I do not carry loads in back nor do I trailer anything. So the load rating of 4 ply doesn't really come into play.

My question, has anyone ever done this and if so, what was the life expectancy or experience with the setup??

Thanks!!

 

well, that's not really the right tire for a 2500. in order to maintain the 2500 rating, it should have a load range D (65psi) or E (80psi).

a 4 ply tire is typically a load range B (32 psi) or C (50 psi). as long as you don't haul or tow, you might be alright. keep the tires at the max psi, whatever that is for max sidewall strength and less squat. watch the tires for awhile - if it looks like they're squatting and flexing a lot, or CRACKING, you need to do something different.

i'd think firestore AT would be a minimum of load range C, which is barely ok. most people don't use the old 2ply, 4ply, 6ply rating anymore, since its not an official tire industry rating. so - check your load range.

i adjust air psi to load. i run about 45-50psi unloaded and about 65+ for hauling wood. high pressures for unloaded driving makes it too light and skatey feeling.


now having said all that - i ran cheap, 32psi tires on my old chevy for years, and at times, loaded it down to where i expected the tires to blow out. but they never did.

 

Def not the correct tire for a 2500. You cannot save money and put on a lighter duty tire. I wouldnt even put a 4ply on my 1500 series!!!
That is a car/suv tire only! maybe for a Ranger or possibly even a dakota, but certainly not for use on a fullsize truck.

Few things..

PSI has NOTHING to do with tire ratings.
Tires are also rated by Load range. You need to look at the sidewall and see what their weight rating is. I believe 4ply tires are right about 1800lbs which is only 7200lbs. Basically you are at MAX weight with nothing in your truck. Bad idea to run your tires at max weight rating anytime.
Light duty tires at max rating get very hot and are very prone to punctures. If I were you, I'd get them off ASAP and just consider it lesson learned before there is failure.
I'm just shocked that a tire shop even allowed or was willing to mount and install them because it can be a liability for them!

 

yep I would not do that

not preaching just an FYI its illegal to run a tire rated under the manufactures oem tire rating and carry a hefty fine if your caught

 

Just checked the load rating on the '4 ply' tires I installed, the rating is 113 which equates to 2535lbs.

2535lbs x 4 = 10140lbs

The GVW of a 2005 Dodge Ram 2500 is 8800lbs

Am I thinking about this correctly??

I have 1340lbs buffer???

I know I'm cutting it close..... Didn't have the $$$$ in these hard economic times but needed new tires as the set I had on the truck were BALD.... Lesser of two evils I guess.

Hoping for a financial break soon!

 

A tire without the sidewall strength to support the weight of the vehicle can easily develop cupping, wear and belt separation issues, not to mention are often found to be a prime cause of poor handling (Death Wobble) down the road.

Lot of weight in the front end of that truck, so even though you don't tow or carry a load, it's iffy.

I know times are tough, hell not many people are experiencing it more than me, but it may end up costing you more in the long run than if you had spent a little more on tires now.

The Destination is a good tire, you should be fine short term, but I'd not haul or tow with them on there...

 

Not exactly. The weight isn't evenly spread to the front/back axle like you are thinking it does but I suppose if the tires are rated for that weight you might br fine around town, but I wouldn't be cruising too fast on the highway because even though they are rated for that weight, they will heat up fast as stated before.
Also, Are these P-rated tires or LT-rated tires?, because P-rated tires that are put onto trucks have a 9% reduced weight capacity. 2550 P rated tire on a truck would mean 2320lb weight rating for 9300lbs total. That is another thing to keep in mind.

 

Bad move. Whay own a 3/4 ton truck that is now a useless 1/4 ton?

2500 trucks have a higher GVW, empty, a 2500 needs a mim of a ten ply tire just to support the LBS of the truck.

Your so blessed to be living in the States, in Canada, you can't buy a new crappy BFG R/T T/A for less than 300.00 cdn new.

Discount tire, check them out.

 

Firestone transforce A/T $159.00 each for an E-load rating-10 ply