Missy Good Wench
Wild Blonde from Cloud Mt
The big issue with the larger tires especially is the amount of "sidewall" flex.
This creates large amounts of heat in the casing which breaks down the rubber/fabric bond as well as fatigues the fabric/belts
The larger tires on a 15" wheel are more sensitive to this than say a low profile 18-20 inch tire like those that have become popular in the last few years.
A 35" tall tire on a 15 inch wheel has a large sidewall section which if underinflated can flex a bunch.
I have never practiced dropping the air pressure while in the boonies. Its far too easy to knock one off the wheel once the pressure is down low.
I normally run about 40 PSI in the 35/12.50 X 15 (light loaded Blazer or Burb)
Heavier loads could see the pressure on up to 45 PSI
These tires are a load range C which is not a heavy service tire. For the DaHooooley I always run Load range E.
On occasion I drop 2 tons on DaHoooleys back and boogie off down the boulevard, so the heavier range tires can take that with no sweat.
So many of the "Off Road" tires are designed to get large amounts of ground clearance (Large diameter) and very agressive tread for getting though the goooop but, the contruction of the tire is not designed for carrying heavy loads.
Now this said, there are many tires available that can do both jobs.
For a light truck like the 1500 Burb or the K Blazer the C rated tire is quite adequate for the job. 1500 Burb 4x4 weighs about #5800 where the DaHoooley wieghs in at a hefty #7000
Ride characteristics (Creature comfort) is also a major consideration too.
Heavy tires that are rated in the E load range are much stiffer and can take away from the ride quality, and quite noticeably on a light vehicle.
Another point with the "traction type" large tires is that the extra flex will allow the tire to work better in the rough stuff as it can grab an uneven surface better.
Just some thoughts.
Missy
This creates large amounts of heat in the casing which breaks down the rubber/fabric bond as well as fatigues the fabric/belts
The larger tires on a 15" wheel are more sensitive to this than say a low profile 18-20 inch tire like those that have become popular in the last few years.
A 35" tall tire on a 15 inch wheel has a large sidewall section which if underinflated can flex a bunch.
I have never practiced dropping the air pressure while in the boonies. Its far too easy to knock one off the wheel once the pressure is down low.
I normally run about 40 PSI in the 35/12.50 X 15 (light loaded Blazer or Burb)
Heavier loads could see the pressure on up to 45 PSI
These tires are a load range C which is not a heavy service tire. For the DaHooooley I always run Load range E.
On occasion I drop 2 tons on DaHoooleys back and boogie off down the boulevard, so the heavier range tires can take that with no sweat.
So many of the "Off Road" tires are designed to get large amounts of ground clearance (Large diameter) and very agressive tread for getting though the goooop but, the contruction of the tire is not designed for carrying heavy loads.
Now this said, there are many tires available that can do both jobs.
For a light truck like the 1500 Burb or the K Blazer the C rated tire is quite adequate for the job. 1500 Burb 4x4 weighs about #5800 where the DaHoooley wieghs in at a hefty #7000
Ride characteristics (Creature comfort) is also a major consideration too.
Heavy tires that are rated in the E load range are much stiffer and can take away from the ride quality, and quite noticeably on a light vehicle.
Another point with the "traction type" large tires is that the extra flex will allow the tire to work better in the rough stuff as it can grab an uneven surface better.
Just some thoughts.
Missy