I've got Goodyear Wrangler 30 x 9.5 inch tires on my stock '02 Safari. Looks like she's due for some new rubber. What's the largest tire I can go to without a body or suspension lift & not experience any problems? Any good tire recommenadtions? No seroius offroading with lots of city & highway driving. Thanks!!
You can go to a 31x10.5, but you will lose a bunch of traction going wider.
I recommend you take a tape measure to your tread to see what is actually on the road (the 9.5" is the sidewall width) and try to shop for something about the same width if you like your current grab on the road. Taller and stay thin is my recommendation.
I got a radical increase in traction when I went from a 10.5 to a 9.5, but I got a large jump smaller in tread width on the road due to the taller and fatter sidewall on my 33x9.5's.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
From the Jeep.com website, in reference to the Rubicon Goodyear MTR's:
"Built with exclusive Durawall triple-ply puncture-resistant sidewalls, these beasty 31-inch tires will grab ledges and anything else they can sink their claws into."
In actuality, they are LT245/75R16, which work out to be about 30.75" diameter.
I wrote an Excel calculator that lets me plug in the tire dimensions and arrive at the outside diameter. I just didn't know the dimensions of the Rubi's tires, and I thought they worked out to 32", not 31".
Try this formula with your calculator * * 2 / 25.4 + The result is the overall diameter.
If you created a new Excel spread sheet, you could label the A column as Size, the B column as Aspect Ratio, and the C column as Rim, and the D column as Outside Diameter. The D column would get the formula =((A2*B2)*2 /
25.4 + C2)
The result in the D cells would be the diameter of the tires you are interested in.
TIP Highlight the D2 cell, and drag the handlebar straight down to apply the formula with the approriate alterations to account for the Rows involved.
You probably entered the aspect ratio as 75 where, with this formula you need to enter it as .75. I simplified the formula to use the aspect ratio without the decimal point and also condensed all of the conversions coming up with A2*B2/1270+C2 for the formula. Remember, with this formula, you enter the aspect ratio without the decimal point(i.e. 75 instead of .75).
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