TIRE Size question
 

I have 22.5 low profile tires on my drives...I need to replace 4.
Found a great deal on 4 lightly used 22.5 regulars.
Will it hurt to run 22.5 low pro on the front drive axle and 22.5 regulars on the back drives?

Re: TIRE Size question
 

[quote="okieoo"
Will it hurt to run 22.5 low pro on the front drive axle and 22.5 regulars on the back drives?[/quote]

Yes.

Re: TIRE Size question
 

[quote=Rev.Vassago]I agree, the regular ones will carrying all the weight

Worse than the weight distribution, if you are on slick roads and have to lock in your interlock, the axles will be turning at different speeds due to the different tire diameters, this can and will destroy a rear end!

Yea, That is what I have always been told. I have seen this done on trailler axles before. But have always been told not to on tractor drives.

Not only will the differentials be taking a beating, the U-joints will be getting tore up as well.

Either run all 22.5 regular(tall rubber) or 22.5 lowpro. If you go with tall rubber on the drivers..you need to put tall rubber on the steers as well.

Either run all 22.5 regular(tall rubber) or 22.5 lowpro. If you go with tall rubber on the drivers..you need to put tall rubber on the steers as well.
_________________
Stan
Other than keeping all your rubber the same size, why?
Just a question.

[quote="klleetrucking"]Either run all 22.5 regular(tall rubber) or 22.5 lowpro. If you go with tall rubber on the drivers..you need to put tall rubber on the steers as well.
_________________
Stan
Other than keeping all your rubber the same size, why?
Just a question.[/quote]

If you run different sizes of tires, it is going to throw off the ride height of thtractor, which in turn puts the u-joints in to angles they are not intended to operate at. even a 1/4 of an inch can cause a u-joint to go out fast. The forced angle also puts the pinion gears inside the differential into a bind, causing undue preassure there, and premature failure.

Believe me...when you blow out the short shaft between the diff's, at highway speeds, it makes lot's of noise and causes lots of damage. Blowing out the main driveline at highway speeds can destroy the under carriage of the tractor and even cause you to flip if the driveline digs into the pavement.

I blew out the short shaft on my truck in 2004...downtown LA on NB I-5,
just north of the 134 interchange. I was in the center lane, the short shaft broke both yokes on the differentials, shot out from between the axles..crossed traffic and hit the cener divider, then re-crossed traffic onto the right shoulder. I was doing 65 mph when it blew..cost was over 4grand to fix. I learned all about ride height, driveline angles, and axle angles while waiting to get back on the road. I will say..Freightliner of LA got me off the highway, repairs made, and back on the road quick. 17 hours.

With different size tires on one drive axle than the other, the power divider will be working overtime compensating for the difference in tire revolutions per mile between the front and rear drives..

Any money you save by buying those cheap tires will be long gone when you have to rebuild the power divider.

Why not just buy the right size tires and do it the right way????

I am,thats why I asked first.

Thanks for all the replies.