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No, it's not OK, You are going to tear up the front differential and also have ABS problems.

? Can't find ABS on this for front anyway. Matters if a farm vehicle now or really driven anywhere? How is it you got the mismatched tire to begin with if new? If used AYOR totally or different brands on an axle.


All thing preferably don't do this as HT said. Matters what you now use this for and would be harder on front diff. with wheels never turning the same speed,


T

I understand why you have to run the same size on front and back if you use 4wd. So I put the
offsize tires on the front even though the rear end is not posi. I still wanted the same size tires on
both sides because I figured even though it might work now long term it might be a problem. I know you
aren't supposed to run donut tires very long. So I decided having mismatched tires on the back would
not be a good idea.

Since I can jack up the front and turn one wheel way and the other the oppposite way I have
a hard time understanding why I having slightly different size tires on those wheels matter. Even
though the cv shafts attach to the front transfer case they apparantly aren't engaged with each
other in any way or you could not turn them in opposite directions.

I really did not know the truck had abs. I know it doesn't have it on the back. I guess it may
have abs on the front.

I got the tires from my son. He had a blow out and the service station put the 235/70/15
on the truck. His truck was a 97 blazer. I have since pulled those tires off his truck and put new ones
on and I decided to put the tires on that truck on this one just to get it back on the road.
The old tires were bald and the tires I pulled off his truck have great tread and I needed to do something with them.

I'll try to find a replacement tire. I only drive this truck about 3k a year. Its a spare truck I keep around.

Thanks

It won't hurt it on that design because it has a center disconnect that basically disconnects one axle (right axle) from the differential carrier. On that design the front differential pinion and side gears always spin while driving in 2wd because the left axle doesn't disconnect from the differential. It probably wouldn't be a good idea to put it into 4wd with two different matching tires though or have two different tires in the rear.

What you don't understand is the differential has side (spider) gears to allow it to make turns. When both wheels travel at the same speed those side gears are not moving or engaged at all. As soon as one wheel turns faster than the other. the side gears engage and will wear them out in no time and the metal worn off of them will destroy the rest of the differential.

I bought a used 235/75/14 for 50 bucks that I will put on the front tomorrow and replace the 235/70/15.
Supposedly its in good shape with about 80% of the tread left. We will see tomorrow I guess.

Back when I got that Jimmy it seems like I needed it every year in the winter because back then it snowed every year.
That was 24 years ago. Since I turned 65 I stay home when it snows and it doesn't snow as much now.

I still have bad winter in Texas tough A couple years ago we had a ice storm and the ice was thick on my trucks cab.
When it slide off it took all the paint with it. That's why I had to paint it last week when I decided to put it back on the road. I didn't have the truck operational during that ice storm and I spun my Blazer around 3 times just going to the store.

Now I guess I can use 4wd if I need it this winter if it snows.

How do you propose you are going to put a 14" tire on a 15" rim?

just like the gop debates guess you got me. I meant 15

Spring for the right tire! You can't put a 14" tire on a 15" rim anyway at all no matter what.


The middle # is % high as it is wide for same numbers which is why a 75 means % is taller hence the circumference difference.


NO. I don't care if the next 14" is on a rim that might fit and bet not. There's more to it than you think. Tires really should be of the suggested size the vehicle maker lists and at least even on most per axle - type, wear and size. If you put ONE brand new tire on a vehicle with 1/2 worn tires it's trouble enough even if you find he exact one new.


OK - now you said Texas and assorted weather of course the state's so big. Got it. TMK almost all has tons of long straight driving and that's when the differential will always think it's slightly turning and mess with it.


Other - 4X4 isn't magic by itself for ice. There's some that nothing is going anywhere for a while and shouldn't.
Wasting time with this - get the right matching tire,


T

It's always best for it to match exactly - no argument. This (if I'm right) you should only be using 4X4 just for the time needed to get out of trouble and back to 2WD like two like it I've owned. Forget and plain wet roads over 30 MPH or turns you feel it bind so mismatched is always binding a bit in this case.
If this has ABS at all you should see it under hood and a light should light while starting the truck and go out as in OFF.
In short to suggest as I should have, have matching tires for each axle. Unless this one is different front and rear would matter and wreck it's behavior if using 4X4 on non totally needed situations like stuck.


Even now if the type I think put in 4X4 on dry road/surface and turn sharp and go just walking speed. It will bind like nuts almost hop on you.
If this vehicle is worth a damn get a matching tire and be done with the issue.


What messes me up is why so many people get four wheel drive and don't need it at all or near never. It's a lot of expense and extra stuff to go wrong IMO for the "real truck" type use fine, for everyday a waste,


T

? It's OK, IMO if just a local vehicle, slower speeds and you don't care that much about tires wearing a bit more and really can't align it that way. 4X4 on all I know of for about then wasn't for any real speed OR not when really needed unlike an AWD which would matter totally.


Preferred of course is matching tires all around if you can swap out for part credit or some deal I would. Right brand too helps.


If nicer and drive more and at speeds change it to the right/matching size,


T