Need advice for '73 Series 3 tires

[Revtor]

From a thread in the S2 forum:

http://www.avontyres.com/4x4/rangemaster

[jac04]

FYI if we were to literally translate 7.50-16 into metric size it would be 190-100-16.

Not really. 7.50 is the wall height in inches. So, overall diameter is 7.5 + 16 + 7.5 = 31". Section width is the first number in a metric designation, and the section width of a 7.50x16 is about 8.25", so it would be more like 210/90/16. Check out the Avon link you posted and you will see the spec for section width.

[yorker]

Before radial tires were around crossply/Bias ply tires were assumed to be 100% aspect ratio, but that could vary in actual measured dimensions anyway.

Original 88" tires were quite small by today's standards as delivered,
a 7.10 15 seems too small for most people today. (~ a 205R15 or P215/75R15 -225/70R15) When you look at original pictures the small diameter really starts to stick out at you since we are used to so many people just going with the 109 tire sizes on all 88s. Years ago I remember watching Wild Kingdom and they had a IIa 109 running around on 88" wheels and tires. That 109 looked very distinctive and quite nearly comical. It still got around and did its job though.


http://www.carbibles.com/tyre_bible.html
http://www.mopar1.us/tireconversion.html

[rwollschlager]

I have Km2's in the 33X10.5 size, but I'm running 15" rims and parabolics. I wheel my truck hard and I love the Km2's. Though if you're looking for a dedicated off road tire, my answer is interco. If you look on national wheel and tire's website, you can search by size, though they don't have many options for 235/85/16, you can get the TSL in a 9X32X16 http://www.ntwonline.com/9X32X16C-TS...l#.VIOaEIfGZTI
or in a 33X9.5.

If you are look for a solely off road tire, these are them. If you foresee yourself spending more than 1/3 of your driving on the road, get the KM2's or the interco truxxus.

[cedryck]

I cannot agree more with you Rob. I bought them in 15' too but not as large as you have, and the price was good. (tire Rack)
virtually no noise on the road, and great off road perfromance.

[REDrum]

Here's what a set of 235-85R16's mounted on Wolf Rims on a 1973 SIII looks like:

a tad off topic, but, how disruptive do you find that 235/85 on the hood, or, rather bonnet? How tall are you?

[SafeAirOne]

a tad off topic, but, how disruptive do you find that 235/85 on the hood, or, rather bonnet? How tall are you?

I'm 6'-02" and I don't find it to be much worse than the 7.00x16 (or was it 7.50x16?) tire that used to be there. My eyes are about in inch below the top edge of the windscreen glass.

I just checked--about 22-23 feet ahead of the front bumper is my sightline distance ahead, on level ground, looking over the most obtrusive part of the tire.

[siii8873]

I had run 235-85-16 and 7.5-16 tires for years. recently changed to 215-85-16 on one vehicle which I like. The truck steers a little better but you are geared a little lower with smaller tire.

[Revtor]

Spreading the actual data, for those that like to obsess over numbers! (me)

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Hey guys, recently did a tire swap and thought it would be good to throw some real life measurements and pics in the thread to ease tire buying "analysis paralysis". Crossposted to GnR forum..

So here we have three tires, all with zero miles, all mounted on LR rims and all at 35psi. I took three measurements: total height (diameter) measured up against a wall with a square. I measured width at widest point with the tire lying flat on the ground, using a straight edge and a square. And I measured the "tread width" which is where I determined the tread ended and sidewall began. This point is pretty evident when you look at the tires, there was some sort of clear point on all three.

It would be nice to get some actual measurements from other typical Rover tires too! (238 85 16, 7.5R16, 7.50 bias plys, XZL/XCL etc etc 7x16, 8x16 etc etc..

Hope this might be helpful, enjoy the snow!
~Steve

235 75 r15 Dunlop AT Radial Rovers. Close to stock for NADA trucks that came with 15" rims?
OD - 28 13/16" (28.81")
Width at sidewall -9 1/8" (9.12")
Tread width - 6 3/4" (6.75")

215 85 r16 Yokohama Geolandar AT-S. Tall 'n skinny! The "rover" look for sure.
OD - 30 3/8" (30.37")
Width at sidewall - 8 9/16" (8.56")
Tread width - 6 1/4" (6.25")

32 11.5 r15 BFG Mud Terrain. Beefy, lots of rubber on the 15" rims, may be perfect if you want to air down to get a big footprint. Fit fine w/parabolics.
OD - 31 3/4" 31.75")
Width at Sidewall - 10 1/2 (10.5")
Tread width - 9 1/2" (9.5")

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