tubeless tyre pressures for a series

scottonthefen

Well-Known Member

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532

Location

England

• Nov 9, 2020

• #1

I've put 7.50 x R16 michelin tubeless tyres on a set of 90 rims on my 2A 88". What tyre pressures should I use? 25 all round by the series book would have been for tubed.. 27F / 38R is what I find advised for Defenders from 1983 onwards. Do they weigh very different? Do I want the rear that high if I'm not much laden?

 

W

Wildefalcon

Well-Known Member

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1,685

• Nov 9, 2020

• #2

Definitely tubeless rims?

If the centre of the tyre touches the ground more than the edges. Deflate. Conversely, inflate.

 

Turboman

Mab An Gov

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60,151

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Lathrowda, Kernow

• Nov 9, 2020

• #3

scottonthefen said:

I've put 7.50 x R16 michelin tubeless tyres on a set of 90 rims on my 2A 88". What tyre pressures should I use? 25 all round by the series book would have been for tubed.. 27F / 38R is what I find advised for Defenders from 1983 onwards. Do they weigh very different? Do I want the rear that high if I'm not much laden?

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Doubt if you will run into any problems with 30Psi all round. If you are going to put a couple of engines in the back, maybe put the rears up to 34.

I used to run my Ninety tyres at 30Psi all round, unless I was towing, in which case I pumped the rears up, never had any problems doing that.

 

L

lynall

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Kent

• Nov 11, 2020

• #4

As TB says above you cant go wrong with 30.

 

flat

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9,075

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Far away from you!!

• Nov 11, 2020

• #5

If you want to get really anal about it then make a wide chalk line across the tread on each tyre and drive dead straight on a perfectly flat even surface (car park for example) after a short distance have a look at the chalk mark, scrubbed off in the middle only = deflate. Scrubbed off evenly across = just right

or save the faff and go for 28-30psi all round

 

Land Raver

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2,015

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In the dog house

• Nov 15, 2020

• #6

I run the Michelin ZXL 7.50 /16 on defender rims (running tubeless). I run 33 PSI all round.
Modern tyres are much more grippy and radials squish quite a bit - especially fronts with engine weight so I find the steering a bit more responsive running harder pressures. Hopefully kinder to the drive shafts too.

 

kermit_rr

Very

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North Shropshire

• Nov 15, 2020

• #7

I go for 30psi all round, but keep an eye on uneven wear