I, too, run the 'D' Range tires on my '73 230 Sequoia. I replaced my
Cooper SRM LT radials this year with Goodyear Workhorse Radials.
Again, I used the standard size (8.75) and LR 'D'. My Cooper's were 10
years old and wearing out. I put 40,000 miles on them after I bought
the coach ( they had about 20,000 on them already) and NEVER had a tire
failure with them, not even when driving in 106 degree weather. The
ONLY problem I had with them was a flat spot caused by locking up the
brakes when some AH pulled in front of me while traveling through
Houston. I am meticulous with my tire pressures. My coach DOES NOT
weigh in at anywhere near what some of the 'newer' ones do. Load Range
'D' tires are more than adequate for my motorhome. Just because General
made a tire in the '70's that didn't do the job doesn't mean that every
GMC needs their tires changed. Those of us 'lightweights' don't need
them.
Those of you that are running all-steel 'E' tires at 'D' air pressures
are making a mistake, also. The sidewall flex from the lower air
pressure fatiques the sidewalls, and is more likely to cause a blowout.
Bill Minor
'73 230 Sequoia
Waukegan, Illinois
Cooper SRM LT radials this year with Goodyear Workhorse Radials.
Again, I used the standard size (8.75) and LR 'D'. My Cooper's were 10
years old and wearing out. I put 40,000 miles on them after I bought
the coach ( they had about 20,000 on them already) and NEVER had a tire
failure with them, not even when driving in 106 degree weather. The
ONLY problem I had with them was a flat spot caused by locking up the
brakes when some AH pulled in front of me while traveling through
Houston. I am meticulous with my tire pressures. My coach DOES NOT
weigh in at anywhere near what some of the 'newer' ones do. Load Range
'D' tires are more than adequate for my motorhome. Just because General
made a tire in the '70's that didn't do the job doesn't mean that every
GMC needs their tires changed. Those of us 'lightweights' don't need
them.
Those of you that are running all-steel 'E' tires at 'D' air pressures
are making a mistake, also. The sidewall flex from the lower air
pressure fatiques the sidewalls, and is more likely to cause a blowout.
Bill Minor
'73 230 Sequoia
Waukegan, Illinois
