Griff Tyre Pressures

[donatien]

Quick question for you all. What tyre pressure is best for a Griff 500 (PAS) 225/245 running Toyo Proxes?

Having moved from Bridgestones SO3's I reckon the Toyos are a bit softer but all advice welcome

Dave

[raw-sewedge]

I run mine at 22 psi.

[shadowfax]

20 front 22 rear

[donatien]

shadowfax said:

20 front 22 rear

Cheers, is 20 a bit low for the fronts as they seem quite soft tyres?

[reeso]

22front, 24 rear. It's in the manual!!! Failing that, contact toyo and ask their advice. They will probably say to keep them at the same pressure as stated in your manual. If you are going to do any tracking, or hard road driving, add 2psi front and rear. Firms up the tyre, but will make the handleing a little crisper!

[seasider]

reeso said:

Did you smack ya head on the wall when you out of bed the wrong side this morning


T1-S 25/27 + more on track
T1-R 24/26 at the moment, winter 22/24

Thats what i've used but i'm no expert, just felt good with my suspension set up at those pressures

[FlipFlopGriff]

24/26 as the Proxies are softer sidewall than Bridgestones which were OE. These pressure wear evenly on our Griff (about 15,000 miles on them now - S's and R's)but depends I guess on the setup. I'd try this first and see how you get on. 20/22 is far too low I would suggest.
FFG

[ads]

FlipFlopGriff said:

24/26 as the Proxies are softer sidewall than Bridgestones which were OE. These pressure wear evenly on our Griff (about 15,000 miles on them now - S's and R's)but depends I guess on the setup. I'd try this first and see how you get on. 20/22 is far too low I would suggest.
FFG

FFG, Can I ask what tyre pressures you are using on the SP 9000's?
I'm running them as book pressures, but the Dunlop's seem to have a softer side wall than the S-02's that I replaced. So I was thinking of 24psi for the front instead of 22! Any ideas?

[shadowfax]

shadowfax said:

20 front 22 rear

Gimp I meant to say 22 front 24 rear, which is what I put in the Blue each time. But I always get a mental block about tyre pressures, and have to check before I put air in any of my motors. Weird. Tyres are SP9000, too.

Ian (Middlewich) gave Bluey a blast the other night and said it was the best standard Griff he'd been in and why did I ever think the Bilies needed changing, cos I must be one of the lucky few whose original shockers aint shocking, as he felt it handled beautifully. Allowing for Ian's hyperbole, I reckon he meant that the car drives well. So maybe the 22 front and 24 rear are about right, too.

Edited by shadowfax on Thursday 8th June 19:25

[Hoover.]

I.m running 24f and 26r on Toyo Proxies,,,,,,, much better then then the redundant Bridgestone SO2s (fronts) sitting in my garage ....... debating on weither to keep them due to front tyre problems in sourcing

[the gazman]

I tried 26r/24f on my Chim with Toyo and did find it better.

[FlipFlopGriff]

ads said:

FlipFlopGriff said:

24/26 as the Proxies are softer sidewall than Bridgestones which were OE. These pressure wear evenly on our Griff (about 15,000 miles on them now - S's and R's)but depends I guess on the setup. I'd try this first and see how you get on. 20/22 is far too low I would suggest.
FFG

FFG, Can I ask what tyre pressures you are using on the SP 9000's?
I'm running them as book pressures, but the Dunlop's seem to have a softer side wall than the S-02's that I replaced. So I was thinking of 24psi for the front instead of 22! Any ideas?

Running 24 in the Dunlops too. Seems fine and no apparent wear issue yet but need to keep an eye on them.
FFG

[Monkeylegend]

[quote=FlipFlopGriff]24/26 as the Proxies are softer sidewall than Bridgestones which were OE. These pressure wear evenly on our Griff (about 15,000 miles on them now - S's and R's)

Don't think you are trying hard enough

[FlipFlopGriff]

Monkeylegend said:

[quote=FlipFlopGriff]24/26 as the Proxies are softer sidewall than Bridgestones which were OE. These pressure wear evenly on our Griff (about 15,000 miles on them now - S's and R's)

Don't think you are trying hard enough

15,000 miles in total - on 3rd rear set and 3rd front although on different wheels so not sure how many we get from each set or am I that bothered as they are pretty cheap compared to most other items.. I know when we had a Chim some years back the rears were replaced every 6,000 miles.
FFG

[groucho]

You lot must drive your cars a lot harder than me. My tyres don't seem to wear.
I've done 8000 on my rears and they still look the same as the day I bought them. The fronts are the same as when I bought the car and still don't look any different. I've done 14000 miles on them.

[Moto]

Just put Toyo's on rear (SO2's on front). Many threads have said that they need to be run in but 200 miles now and still handles like a pig. A slight pull on the steering wheel and it feels like the backs going to come round on you. Quite scary. Am running 26 psi on rear and 22 front. Don't know whether to start playing with pressures or hope it comes together as they scrub in.

[Seasider]

Moto said:

200 miles now and still handles like a pig.

They need longer

[GarryM]

If the fronts are well worn then having new tyres on the back with tall, springy tread blocks will make it feel a bit odd/oversteery (in addition to Toyos needing miles to bed in). Should be fine, just an odd feeling for a while.

[Moto]

Thanks .... I'll bear with it a while longer. The oversteery / bit odd / springy words sum it up perfectly. Also worth noting that my splitter came off on the grass field car park last weekend at Shelsly Walsh. This could be contributing to instability at high speeds. Must get round to fitting it tomorrow.

[simpo two]

I found from experience that front tyres are critical to handling, and it's more than simple pressure. I tried Falkens (very briefly) and it felt bloody dangerous - it's due to the sidewalls. If you want a crisp turn in and kart-like handling, they need to be stiff.