DRW VS SRW VS SBT
Just read yet another thread of SRW vs DRW got me thinking of a compromise getting more common on the bcubicig trucks. Single big tire. They look to be at least 50% more cubic capacity of a single. ...
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Most trucks do not carry a spare. BUT, a super single weighs less than duals, has better stopping, traction forward, mpg's etc. The ONLY reason for staying with duals is as noted, the human factor of the redundancy factor if a flat occurs.
Many class 8 trucks use a std sized tire in front, and singles in the rear. so two sizes, then I have seen drop axels with a different sized yet, along with different sizes on the trailer. IE 3-5 different tire sizes over the whole rig.
If I had an option for my dually, the rears would be a 435 width, probably in the 40-50 series range for height %. Fronts I have already removed the 215-85-16 and gone with a 245-75-16 as that tire gives me better steering, tire life etc vs the 215's on the rear and when on the front. Then again, I run tractions on the rear, and a hwy on the front, do not rotate, even tho it is a 4wd. Been doing that for 130 of the 150k miles.
Reality is, a 265-285 width tire on the rear, with enough ply rating, WILl handle any load we as DOT class 3 owners will put on it, along with what the DOT allows for lbs per inch width before being considered over wt per the federal bridge laws.
At the end of the day, there is usually more than one way to skin a cat per say.
Marty
Many class 8 trucks use a std sized tire in front, and singles in the rear. so two sizes, then I have seen drop axels with a different sized yet, along with different sizes on the trailer. IE 3-5 different tire sizes over the whole rig.
If I had an option for my dually, the rears would be a 435 width, probably in the 40-50 series range for height %. Fronts I have already removed the 215-85-16 and gone with a 245-75-16 as that tire gives me better steering, tire life etc vs the 215's on the rear and when on the front. Then again, I run tractions on the rear, and a hwy on the front, do not rotate, even tho it is a 4wd. Been doing that for 130 of the 150k miles.
Reality is, a 265-285 width tire on the rear, with enough ply rating, WILl handle any load we as DOT class 3 owners will put on it, along with what the DOT allows for lbs per inch width before being considered over wt per the federal bridge laws.
At the end of the day, there is usually more than one way to skin a cat per say.
Marty
