I use my car for Hill climbing in the Production class. Last year it was very nervous at the rear, largely becuase the tyres never get hot in short runs. I set it up with about 1.30 negative at the front and 2.00 at the rear, which combined with lower than standard tyre pressures helped a bit.
For this year I have gone onto bespoke AST coil overs (lots of excellent help from Curtis Woodman) and more camber 2.30 front and 2.00 rear - toe-out at front 10' (just over 1mm) but 20' in at the rear (2.5 mm) to try to get some heat in the tyres. I am not brave enough to run toe out at the rear, as most of the hills are between walls, trees or even railway sleepers. Even on road tyres this is a huge improvement - but the point of my post is that I do not get any tramlining or twitchiness with these camber settings. Next step is track tyres for the next event - will be using Kumho as they are the only ones that come in a very soft compound - were very good on my Clio.
For this year I have gone onto bespoke AST coil overs (lots of excellent help from Curtis Woodman) and more camber 2.30 front and 2.00 rear - toe-out at front 10' (just over 1mm) but 20' in at the rear (2.5 mm) to try to get some heat in the tyres. I am not brave enough to run toe out at the rear, as most of the hills are between walls, trees or even railway sleepers. Even on road tyres this is a huge improvement - but the point of my post is that I do not get any tramlining or twitchiness with these camber settings. Next step is track tyres for the next event - will be using Kumho as they are the only ones that come in a very soft compound - were very good on my Clio.
