Tyre pressures - Toyo - Road use?

[Edmundo2]

Hi. Just wondered if anyone could advise what tyre pressures to run Toyo Proxes TR1's on a Griff 500. Reason I ask as that I hear the tyre wall is softer than that of a Bridgestone and therefore wondered if people use different pressures depending on tyre fitted. Car is currently only used for fast road use and running standard suspension.
Any info welcome. Cheers, Ed.

[Slacey]

Add 1 to 2 psi over standard (22f, 24r) and see how they feel. Add or reduce by 1 psi at a time to they feel right to your driving style.

[V8 GRF]

I'm running 26psi all round on 16" wheels.

[steve-V8s]

also 26 all round

[eng622]

I've just put new ones on the rear and running 27psi, noted on this forum to beb them in.

[Al 450]

I always do them 2 psi higher than the figures in the manual, or at the settings for 'spirited continental driving'.

[Edmundo2]

Al 450 said:

I always do them 2 psi higher than the figures in the manual, or at the settings for 'spirited continental driving'.

You have to love the wording in manufactures manuals don't you. I'd have loved to have seen TVR booklets with recommended pressure settings for 'snaking sideways out of T junctions'.

[AlanKSG]

I add about 4psi all round. And yes, I have taken advice on this from people in the tyre trade who I trust, and practically it does feel better on the road.

[Chimjunkie]

General consensus on these is 24-26 front and 26-28 on rear. Will also depend on outside temperature if you are that fussy.

[steve-V8s]

Only slightly off topic.

Having now done 500 miles on new T1rs have to say am very happy with the good compromise between grip and ride quality. The car tends to be a bit hard for comfortable road use having a stiffer set up than standard particularly with “track day” rubber which tends to have stiffer side walls. Read wildly different opinions of the T1rs but I find them at least as good as the S03s they replaced. Plainly they offer nowhere near the dry grip of A032s, 888s or the like but generally very happy with them.

[Edmundo2]

Thanks All. Put 26 all round in yesterday then joined another 150 or so motors for Yorkshire Breakfast Meeting drive out. Good day and have to say car felt fantastic. It's booked in for ball joints and front top wishbone bush and geo soon so should feel better again. Re the TR1's so far seem great.

[Hoover.]

Edmundo2 said:

Thanks All. Put 26 all round in yesterday then joined another 150 or so motors for Yorkshire Breakfast Meeting drive out. Good day and have to say car felt fantastic. It's booked in for ball joints and front top wishbone bush and geo soon so should feel better again. Re the TR1's so far seem great.

Have a little play around with pressures... ie a few more in the rear... you will be surprised what diffrences can be made..... everyone has their own idea of what is right.... but at least you know where to start from now.

[jacjac]

I've recently had my second set fitted. The first set did two European rallies, number of track days, plus normal driving. I run 24 front 26 back on standard 15/16 rims. As an 'all round tyre' I think they are very good,especially as all four came fitted for a good bit less than £400.(makes my Porsche owning mate weep)!

[FlipFlopGriff]

Same here, about to go onto set 4 of Toyos. 24 front 26 rear gives even wear all the way down so a good starting point. Standard 15/16 inch estorils.
FFG

[raphael.kircher]

Hello "EDMUNDO 2" (Ed Carter ?), I am trying to reach you since a few days...have you recieved my last 2 messages ?

[raphael.kircher]

Hello "EDMUNDO 2" (Ed Carter ?), I am trying to reach you since a few days...have you recieved my last 2 messages ?

[red griff roger]

Hoover. said:

Have a little play around with pressures... ie a few more in the rear... you will be surprised what diffrences can be made..... everyone has their own idea of what is right.... but at least you know where to start from now.

It is worth checking to see what you are actually driving on. 'Spirited driving' makes the tyres hot, and pressure goes up. For reference, running 24psi (front) on a track day, turns into 18 psi when cold. Carry a guage, and as Hoover says, play about

[bobfather]

red griff roger said:

It is worth checking to see what you are actually driving on. 'Spirited driving' makes the tyres hot, and pressure goes up. For reference, running 24psi (front) on a track day, turns into 18 psi when cold. Carry a guage, and as Hoover says, play about

Tyre pressures are always quoted as cold pressures. Car manufacturers know that tyre pressures rise when hot and declare the cold pressures so that when warm the tyre will have reached the required higher running pressure. These 'hot' pressures are not normally specified. The SO2pp pressures of 22/24 quoted in the TVR handbook are cold pressures. If you set your tyre pressures when hot then you'll be setting them too low.