7.50R16

**Sleepy** · 13th August 2008, 01:11 PM

There is lots of info here:

Car Bibles : The Wheel and Tyre Bible Page 1 of 2

Interesting quote: "Land Rover folks reckon a 265/65R16 is a good replacement for the "750", although the tread is slightly wider and might give some fouling problems on full lock. It's also 5% smaller in rolling radius so your speed will over-read by about 4mph at 70mph. If you can't fit those, then the other size that is recommended by Landrover anoraks is 235/85R16"

I think he means us!

**Scouse** · 13th August 2008, 01:16 PM

Originally Posted by rovercare

Shows how silly I am.....................or atleast how little I have to do with such small girly tyres

It's not the size that counts, it's how you use them.

Or so my wife keeps reassuring me

.

**jimbo110** · 13th August 2008, 03:50 PM

Originally Posted by Scouse

It's not the size that counts, it's how you use them.

Or so my wife keeps reassuring me

.

She's trying to be nice to you, pity it's not true

**jimbo110** · 13th August 2008, 03:53 PM

Originally Posted by Scouse

It's not the size that counts, it's how you use them.

Or so my wife keeps reassuring me

.

Sorry, just had to do it...........................

**2_door** · 13th August 2008, 04:12 PM

geez scotty, he knows you pretty well

**2_door** · 13th August 2008, 07:18 PM

the early RRC's (72-84) had a narrow pressed steel rim as standard, 6 inch according to the workshop manual, and I am guessing that they need a tube as well....so my next question is -

a- how low can you safely run tyre pressures off road before you run the real risk of running the tyre and tube off the rim? I have been told about 20 psi which sounds about right, but would like to know what others think/have experienced

b - if I fit a tubeless tyre in say 235/85/16 will it be safe to run it at 15-20psi off road on these rims considering the bagging of the sidewalls and the security of the beads on the early steel rim

**Bearman** · 13th August 2008, 08:08 PM

I run 235/85R16's on my 110 County with 130 ANR1534 rims and find they are an ideal replacement for 7.50R16's as they are approx the same diameter and a bit wider in the tread. They dont foul anywhere even on full lock.I like the Dunlop Adventurers (pretty aggressive tread pattern plus quiet bitumen running) although they are a bit hard to get hold of these days. Like me, getting a bit long in the tooth!!!!!

**2_door** · 13th August 2008, 08:27 PM

Originally Posted by Bearman

I run 235/85R16's on my 110 County with 130 ANR1534 rims and find they are an ideal replacement for 7.50R16's as they are approx the same diameter and a bit wider in the tread. They dont foul anywhere even on full lock.I like the Dunlop Adventurers (pretty aggressive tread pattern plus quiet bitumen running) although they are a bit hard to get hold of these days. Like me, getting a bit long in the tooth!!!!!

how wide are these rims

**Bearman** · 13th August 2008, 08:56 PM

6 1/2 inches plus a heavier load rating I believe

**JDNSW** · 14th August 2008, 06:26 AM

Originally Posted by shorty

the early RRC's (72-84) had a narrow pressed steel rim as standard, 6 inch according to the workshop manual, and I am guessing that they need a tube as well....so my next question is -

a- how low can you safely run tyre pressures off road before you run the real risk of running the tyre and tube off the rim? I have been told about 20 psi which sounds about right, but would like to know what others think/have experienced

b - if I fit a tubeless tyre in say 235/85/16 will it be safe to run it at 15-20psi off road on these rims considering the bagging of the sidewalls and the security of the beads on the early steel rim

The exact pressure you can run is very dependent on both the load and the type of tyre - but I have regularly run tyres at 15psi on Series Landrovers (and as low as 10psi on occasion) without any movement on the rim, but you have to treat the throttle and brake with respect.

You should also be aware that running tyres at these pressures either for long periods, or at speeds above about 30kph, or on rocky ground, is certain to cause damage to the tyre carcass. Note that these were 7.50s on 5.5" rims - the wider the rim, the more likely it is to move on the rim, and tubeless tyres are also more likely to move.

John

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