slicks,tyre sizes and tyre temps

Robin · March 08, 2012, 07:48:11 PM

Stick some 13's on. Semi and slicks are easy to come by.

I run 175/50/13 a048r's on my ats classics

dub-disaster · March 08, 2012, 08:02:01 PM

I've got 256mm brakes so they won't fit although I may try some a048's in 55 profile on my 14's

samg40 · March 08, 2012, 09:37:40 PM

Exactly my problem, I've got 256's too so can run 13's. 14's are just poo sizes in track spec tyres.

hayesey · March 09, 2012, 09:21:53 AM

I use 185/55/14 yokohama a048r on my 14" wheels.

Andy · March 09, 2012, 02:24:06 PM

Yoof's got 13"s over 256mm brakes.

hayesey · March 09, 2012, 02:49:53 PM

yeah with offsets so silly the car is un-drivable with them on

Yoof · March 09, 2012, 02:55:47 PM

ET0 required to clear brakes, I guess with 256mm Girling calipers, you may get away with shaving 10mm off that.

No problems with arch clearance anymore- I've chopped that arches away

G40motorsport · March 21, 2012, 12:22:38 AM

Toyo R888 185/60/13 worked perfect for me on standard rims

z3i · June 19, 2013, 10:27:40 PM

Sorry to thread hijack, but what brakes are people running with 13" wheels? Surly not standard on track? And ive got some road legal track tyres, even when warm i can hardly get the power down in first sometimes second, 175 60's kumho v700's no slip diff
am i doing something wrong?

Yoof · June 20, 2013, 08:33:02 AM

Cup cars always used 239mm stock brakes. Fitted with track pads and race fluid, and a bias valve.

Just try to push the pedal through the floor!

I run a 256mm 4-Pot Midilite (Wilwood) and a larger master cylinder, with bias valve (stock rear brakes)

z3i · June 20, 2013, 08:58:45 AM

Quote from: Yoof on June 20, 2013, 08:33:02 AM
Cup cars always used 239mm stock brakes. Fitted with track pads and race fluid, and a bias valve.

Just try to push the pedal through the floor!

I run a 256mm 4-Pot Midilite (Wilwood) and a larger master cylinder, with bias valve (stock rear brakes)

haha thats what i have been doing!! Pretty much set my pads on fire on holiday, was smoke piling out of them! And boiled my fluid, you its bad when you METAL IS ON FIRE!! Brembo discs and pagid pads

Ive got a 22mm master cylinder to go on, i tried looking it up but how does this bias pedal box thing work? Ive been having loads of trouble with my clutch and pedal boxes cracking, thing ive probably cracked the bulk head (smashing those brakes lol)

Really considering pedal box
thanks

Andy · June 20, 2013, 09:19:05 AM

Get some better (harder) pads than OEM and some decent fluid and it'll be miles better.

z3i · June 20, 2013, 09:28:36 AM

Quote from: Andy on June 20, 2013, 09:19:05 AM
Get some better (harder) pads than OEM and some decent fluid and it'll be miles better.

ok mate, thank you. Could you recommend me some fluid, discs and pads for fast road/hard track use
im sure coming down some on these mountain sections is alot harsher on your brakes than serious track use, as your just constantly slamming them on
thanks again

Yoof · June 20, 2013, 12:44:11 PM

Probably so as you're going much slower with longer brake applications, for a longer period of time.

RBF600 Fluid is what I use, loads of pads for Mk1 Golf GTi out there that will fit the G40, whatever you pick make sure it's not some endurance pad which requires you to left foot brake for the first 5 miles so they work.

I'd also leave the standard master cylinder on with standard size calipers.

Robin · June 20, 2013, 12:59:49 PM

I run standard brakes on my car and last time I was at Oulton i ran black diamond grooved and drilled discs along with some DS3000 pads - they were really really good once bedded in (the pads come with instructions on how to bed them in on track - it's something like 3 hard stops from high speed and then allow to cool).