[KIC]

Okay, so I screwed up. Everything in the last post is correct except that I have the original 15-inch rims, not 16-inch. Being TDY for 4 months made my memory incorrect.

The original tires that came on the Burb were 7.10 X 15 6ply.

So I did some research. I want to get the biggest stock looking tire possible. I know there is a big difference in ride between a bias ply and a radial on these tanks.

So……..

Tire width is the width of the tire measured in millimeters from sidewall to sidewall. The first three-digit number in the tire size refers to the tire width in millimeters . For example a 215/65 R15 tire, the width is 215 millimeters. Aspect Ratio is the ratio of the height of the tire's cross-section to its width. Obviously the R is for radial.
A metric tire's section width is measured in millimeters. This measurement is taken from sidewall to sidewall.

Aspect Ratio - "65" This number refers to the height of the sidewall. It is a percentage of the section width. For example, 65 percent of the section width of 205mm (8.07inches wide) equals 133.25mm, this converts to a sidewall height of 5.25 inches. So I made the following charts:

205mm = 8.07 wide 65 = 133.25mm = 5.25 height
210mm = 8.27 wide 65 = 136.5mm = 5.37 height
215mm = 8.46 wide 65 = 139.75mm = 5.50 height
220mm= 8.66 wide 65 = 143mm = 5.63 height
225mm= 8.86 wide 65 = 146.25mm = 5.76 height
230mm= 9.05 wide 65 = 149.50mm =5.88 height
235mm= 9.25 wide 65 =153.75mm = 6.05 height

205mm = 8.07 wide 70= 143.5mm = 5.25 height
210mm = 8.27 wide 70 = 147mm = 5.79 height
215mm = 8.46 wide 70 = 150.5mm = 5.93 height
220mm= 8.66 wide 70 = 154mm = 6.06 height
225mm= 8.86 wide 70 = 157.5mm = 6.2 height
230mm= 9.05 wide 70 = 161mm =6.34 height
235mm= 9.25 wide 70 =164.5mm = 6.48 height
205mm = 8.07 wide 70= 143.5mm = 5.25 height
210mm = 8.27 wide 70 = 147mm = 5.79 height

215mm = 8.46 wide 75 = 161.25mm = 6.35 height
220mm= 8.66 wide 75 = 165mm = 6.5 height
225mm= 8.86 wide 75 = 168.75mm = 6.64 height
230mm= 9.05 wide 75= 172.5mm =6.79 height
235mm= 9.25 wide 75 =176.25mm = 6.94 height


However, it seems the the 75 is a taller tire and fills up the wheelwell better.

The fitment issue is in the "235" size that may need or require a minimum 6-inch rim and I believe the stock 15-inch is 5.5-inches wide. There has been some who have successfully used 235’s on 5.5-inch rims.

One tire that was suggested is the Primewell PS850 but it is only a 4-ply tire.

Also, the Yokohama RY215 7.00R15 D is suggested but is a commercial all position tire that is designed for light to medium duty commercial applications. This is an 8-ply tire that will have a rough ride and run about $170.00 each. The Yokohama is 29.4" tall and the P235's are 28.9" tall.

A P205/75R15 is 27.2" tall

What I hope to do is decide on a size, buy a used set for rollers while putting the tank back together and then buying new tires when it is road ready.

A picture of the RY215 7.00R15 D is below: