deputydog95

TR says 38/40. Hot. I agree based on running them at a couple different tracks now.

I've run them lower (squirmy) and hot by accident (greasy). The sidewalls aren't nearly as stiff as an R888 etc...

deputydog95

If I could find them I would still be running them. Almost impossible. I know people that are now running the RA rears and NT01 fronts, as the 245's have all but disappeared.

However, the 305's almost seem to be appreciating at this point as I've seen them at close to $400. That's nuts... Especially for a 6 year old tire.

tasman

Thanks to everyone for their input. Have been tracking for a while now but too lazy to get dedicated track wheels or R comps. Just like to show up, drive and drive home. May have to go the dedicated track tire route or dot/R later this year or next.

Will try hot pressures of 35 this weekend and go up or down from there. Once again thanks for everyones input.

Tal

deputydog95

You definitely DO NOT want to go down. You will hurt the tires. They are not stiff enough to handle low pressures. They also have an issue delaminating if they get too hot. I was warned not to run high psi's for extended periods.

Bear in mind these tires, although pretty good, are definitely 5-7 seconds slower than a good track tire, all things being equal. They drift and howl, but are dual purpose in that they can operate in both environments. Personally I don't care for them on the track after normally running R comps. But they do make for good backup or rain tires.

deputydog95

Here's a good thread on 6speed about SS temps. I got some of my info from here: http://www.6speedonline.com/forums/g...-pressure.html

tasman

DD

Thanks for all of your input. Will definitely not go down. Sounds like I will have to change to r comps sooner rather than later. Ultimate lap times are not my goal though. I want something which is fun, relatively predictable, long lasting, and cheap! A guy can dream can't he.

Larry Cable

wow ... really, that's good to know!

Larry Cable

re: the corsa's they are a bit more sensitive to heat than the SS ... I would go with similar pressures to the SS, do not let them get too hot/over inflated ...

try the chalk test ...

tasman

Thanks for the tips Larry. Think I will just stick with SS this time and try corsas at the next event.

Tal

Larry Cable

Ive had the Corsa's on both 7.1 and 7.2 and love them to bits ... they are not as good as the MPSC+ in the dry, but are better in the wet.

I dont have any data to support this but I would expect them to be slower than MPSC+ in dry, faster in the wet, faster in the dry than the MPSS, but probably not as good in the wet...

NJ-GT

1. PSS: 34 front 38 rear
2. Corsa System. 28 front 32 rear

Last time I ran on street tires, my tires gained 16 psi from cold pressures. Sometimes the same tires just gain 6 psi. It depends on the weather, hot days require lower cold pressures, but don't run too low as to damage the sidewalls.

mdrums

Guys.....hold on... This is the OP's 1st track event....he's not going to heat up the tires 8-10psi.

I suggest for your 1st de to start out with the cold psi for the GT3. This will work with the stock alignment settings. As you progress and get faster then you can start to play with alignment and tire pressures...depending on the tire you will be using.

Larry Cable

whoops ... well spotted, +1

mdrums

Larry...LOL...before you know it this crowd will have the guy doing all sorts of cheater mods and running Hoosiers for his 1st track event. We don't want to scare him away from the crack out of the gate....let him start to fall on his own then we all can swoop in and spend his money.

Larry Cable

well he cant possibly navigate around a track without a pair of RS 4.0 (wannbe) dive planes for starters, and 9 degree "AoA" on his rear wing for pete's sake!