Milky windows
Postmaster
Joined: Nov 2001
Posts: 3,351
Likes: 1
From: Escondido, CA
235/70R15's will fit with no issues. And for what it is worth...
235 = tread width
70 = side wall height (% of tread width)
R = radial
15 = rim size
Also 10w-30 oil means: 10w, how well the oil flows in WINTER; 30 is the summer flow rate. The "W" is not for weight as most people think.
235 = tread width
70 = side wall height (% of tread width)
R = radial
15 = rim size
Also 10w-30 oil means: 10w, how well the oil flows in WINTER; 30 is the summer flow rate. The "W" is not for weight as most people think.
Junior User
Joined: Dec 2007
Posts: 62
Likes: 0
From: Sioux City Iowa
Your rim width will dictate how wide you can go safely go on your tires. Some quick notes I jotted down while asking the tire dealer questions for stock rim widths. Rim width of 5 to 6 and 1/2 inches: 6.00-15 = P175/75R15 = P185/70R15. 6.70-15 = P205/75R15 = P215/70R15. 7.10-15 = P215/75R15 = P225/70R15. Rim width of 5 to 7 inches: 6.40-15 and 7.35-15 = P205/70R15 = P195/75R15. I myself put a P205/75R15 Firestone FR380 on my stock 1956 F100 this spring. Looks all right to me.
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