Tyre Pressures

[rhino_mac]

Hi guys,

 

Can anyone tell me what tyre pressures I should have for my 1959 TR3 with 60 spoke wires with inner tubes.

 

Thanks

 

Richard

[Glynn Hobbs]

What make, model and size of tyres Richard?

[TomMull]

From the Factory Service Manual, 22psi front and 24 rear. I think that was for bias ply and perhaps a bit more for radials. The manual also suggests higher pressures (+ 4 t0 8 lbs) for fast speeds.

Tom

[rhino_mac]

They are Michelin XZX 165/15's from memory.

[Don H.]

I run 28 psi front and rear on my Vredestein Sprint Classics. This was the recommendation of Hendrix Wite Wheel who sold the 4.5-inch 60-spoke wheels and 165/80-15 tires to me and I've had no reason to change from their targets.

Edited August 14, 2016 by Don H.

[stuart]

24 front 26 rear is usual setting though it also does depend on what your doing with it. One up normal driving thats fine, if your loading it up for high speed touring then up by 2lbs front and rear will be better.

Stuart.

[Glynn Hobbs]

I run 26(f) and 28 ® and have found it the best balance for my use, but worth playing around with them to decide which pressures give you the best feel.

 

Glynn

[rhino_mac]

Thanks guys. It's about time I lifted the bonnet and checked the oil so I thought checking the tyre pressures might not be a bad idea too until I realised I had no clue what they should be!!

[rhino_mac]

Just bought a tyre pressure gauge. 14 psi front and rear.

 

I thought hey we're starting to look a little flat!

[John Morrison]

If you have been inadvertently running so low, make a point of checking the sidewalks for cracking.

I would try 24f 28 r for everyday running and put another 2 ilbs in the rears for a full load or sustained high speeds.

Whatever you settle on keep 4psi difference Fronts to Rears - this is important.

 

John

[james christie]

That's quite a difference, John, What is your reasoning? Like many I've always run on a differnce of 2lbs.

 

James

[Andrew Smith]

I run 28 psi front and rear on my Vredestein Sprint Classics. This was the recommendation of Hendrix Wite Wheel who sold the 4.5-inch 60-spoke wheels and 165/80-15 tires to me and I've had no reason to chance from their targets.

 

26/28 on same tyres and spoke rims as Don.

 

Cheers

Andrew

[peejay4A]

28/32 on Eric's Yokos.

[John Morrison]

Andrew, if you look at almost all tyre fitment charts of the era, then the vast majority of RWD have something approaching 4lbs difference front to rears with the rears always higher.

It's to do with the slip angles of the tyre, and to ensure the car stays as an under steering animal.

 

John.

[PeteT]

I've got the 155 verdestiens on tubeless wires but I think they look to flat at the lower pressures. I've been trying higher pressures just to see if it makes any difference and I've just put them up to 30 psi all round. They look better and will report back following today's run out.

 

Regards, Pete

[PeteT]

Hi all,

 

Tried it at 30 psi and it was a bit jiggly. Steering seemed ok but I think I'll go back to 28.

[qim]

1. Hi

Are you talking about radials?

 

I used to drive from London to Lisbon at constant speeds over 90 mph (yes, I'm still alive!) and always went over the recommended 24/32 from the owners manual to 30/32 and I cannot see anything wrong with that.

Edited September 5, 2016 by qim