What skinny as a second bonnet mount spare

**towe0609** · 26th January 2014, 06:56 PM

I think the answer is no but thought I'd get confirmation so I can just move on.....

I would like to mount a spare on the bonnet of a Td5 130. This would be a second spare, and will quite possibly never be used .... but you never know. I have dual wheel carriers on the rear, but have too much weight over the rear axle and would prefer to move a spare to the front.

I was wondering if there were any tyre sizes 'skinnier' than my 235/85R16 which could be fitted to a 5.5" rim which would have the same circumference?

The objective being to reduce the impact on driver vision of the bonnet mount.

**rijidij** · 26th January 2014, 07:59 PM

A standard 750/16 is the same circumference as a 235/85R16 (31").
750/16's are a very common size fitted to earlier Defenders, Countys and all (?) 130's as standard, so they're easy to find second hand.

Cheers, Murray

**towe0609** · 26th January 2014, 08:29 PM

Originally Posted by rijidij

A standard 750/16 is the same circumference as a 235/85R16 (31").
750/16's are a very common size fitted to earlier Defenders, Countys and all (?) 130's as standard, so they're easy to find second hand.

Cheers, Murray

Thanks Murray - I already have a few 750R16s kicking around but was hoping for something even skinnier.

What difference in circumference becomes materially important ... the exploroz tyre size calculator has the 235/85R16 having a circumference 6cm greater than the 750r16

**eeyore** · 26th January 2014, 10:05 PM

Not sure how tall you are, but perhaps you could combine a 750/16 tyre with something like these MUD Seat Rails just to raise your seat height a bit.

**vnx205** · 27th January 2014, 07:34 PM

The chances of finding something skinnier than a 750x16 might be slim.

A 238/85R16 has a height that is 85% of the width. A 750x16 is 100% isn't it?

Are there any common tyres that are more than 100% profile?

**JDNSW** · 28th January 2014, 05:58 AM

Originally Posted by vnx205

.....
Are there any common tyres that are more than 100% profile?

I don't know of any, let along common ones, but how about a larger diameter rim with a narrower tyre? Not going to be something common though - all the 17,18,19,20" tyres used today are wider than 7.50 as far as I know. Maybe something industrial or agricultural?

John

**Ranga** · 28th January 2014, 06:58 AM

If your a short-arse like me, maybe you can raise the seats?

**VladTepes** · 29th January 2014, 12:30 PM

Just live with a 235 85 or dont put a spare there.

**weeds** · 29th January 2014, 12:57 PM

out of the 200 000km I have travelled with a 235/85/16 on the bonnet I reckon its been an issue for 100m max. i.e. the odd hole/drop off/tight spot

**JohnF** · 29th January 2014, 01:41 PM

do not know your engine, but could you make a sort of well in bonnet to recess that tire down lower to the motor, hence make it lower. Feasability of this may depend on how high motor is.

However something high in center of motor like carbys in older Land Rovers could possibly fit in where brake hubs normally go. If this is feasible you would have to learn to TIG weld aluminium to do it [or pay someone], but I do not know without looking at the set up.

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