I recently bought 4 used michling 265/75-16 tires for my truck . 3 of the tires r michlin LTX and 1 is a michlin LT4 . I was told they were the same tire but the odd 1 was made exclussivly for sears . I had them put on about 2 weeks ago and this morning I was looking @ them more closly when I noticed that two tires was a load range E when the other 2 were load range C.
The load E tires have a max 80 psi (cold ) and the load C tires have a max 50 psi (Cold ). The place I had put them on must not have noticed and put a C and a E on the front and a E and a C on the back ( I'm thinking he didnt notice the diff )
My question is will this cause me any performance / safety issues
Does it matter that there mismatched C/E on the fronts and C/E on the backs. ? what would be a safe tire pressure all the way around?
Thanks in advance ,
PatsFan

 

i would run the high load range tires in the back and the lighter load range tires in the front and air them up to the tires recomended pressure, that is what i would do, good luck

 

What do you suggest the reccomended pressure is ? Is it the same as the max which would be 80 psi and 50 psi ?

Thanks for the quick reply ,
Patsfan

 

Patsfan05488, as stated previously, I would run the same load range tires either front and rear, rather than side to side. Side to side would be similar to having one good shock and one bad shock on each side as the tire sidewalls are much different between LR C and E. For tire pressure I would run the C's in the 36-40 range. For the E's, when I had a set of BFG ATs in LR E, I ran them at 50 and got good wear and they weren't too hard.
The sidewall numbers are the max and you don't want to run at that unless you are at or near the max weight for the tire. On an F150, that is near impossible, without tearing up the truck. Load range C have a max of approx 2300 lbs per tire, so max axle for these would be 4600lbs. Well over your axle rating. Load range E's are rated at approx 3000lbs per tire.

 

Wow thanks for the info guy's . I went and back to the place I had them put on and Had them put the E's on the back and the C's on the front. they put 65 psi on the E's and 50 psi on the C's.
The ride seems a bit Ruff. I would like to lower the psi from what they did . 50 for the E's and 40 for the C's would be great. It almost seems extreme to put 50 psi in the E's but if it worked for you that would be great.

Thanks again ,
Rob Coburn

 

I think I got it set to the best im going to . I set the front tires ( C's ) to 43.5 psi and the back ones ( E's ) to 55 psi . I drove it about 20 miles after . On the interstate and city roads. I live in Vermont so the roads R in ruff shape this time of year but the truck felt great . I'll give it another week @ these setting to see how it feels when im more used to it.
Again thanks for all the help ,

PatsFan

 

Why don't you just buy 4 matching tires?