Alignment Specs |
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Alignment Specs |
Charles Freeborn |
Jun 6 2021, 10:08 AM
Post
#1
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Member Group: Members Posts: 250 Joined: 21-May 14 From: United States Member No.: 17,377 Region Association: Pacific Northwest |
Whatcha' all running?
Mine is a 4 cyl, 225/50/15 Toyo RR's on all four corners. Front suspension from an '85 911, rear has coilovers and reinforced trailing arms with diagonal braces. Thx! |
wndsrfr |
Jun 6 2021, 07:42 PM
Post
#2
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Senior Member Group: Members Posts: 1,430 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region |
I'm close to 1.5 degrees negative camber on all 4 corners to get good even tire temperatures. Had earlier been running more negative but for road racing this is better--I think the autocross gang uses more negative. That said, I'm in a /6 with 215rwhp weighing 1950 pounds without me in it and on bias ply Hoosiers.
I ran Toyo RR's for years and loved them--225 all around--great tires, start at about 29psi, finish 30 minute session about 33-34psi. Get a probe type pyrometer, failing that get a good sensitive feel across the tread on all four corners to set your camber to get the temps even. Toe is just a bit of toe in front and rear, say 1/8 inch max. Hard braking prior to turn-in tends to spread the fronts in the direction of toe out....ymmv... |
Charles Freeborn |
Jun 6 2021, 08:01 PM
Post
#3
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Member Group: Members Posts: 250 Joined: 21-May 14 From: United States Member No.: 17,377 Region Association: Pacific Northwest |
I'm close to 1.5 degrees negative camber on all 4 corners to get good even tire temperatures. Had earlier been running more negative but for road racing this is better--I think the autocross gang uses more negative. That said, I'm in a /6 with 215rwhp weighing 1950 pounds without me in it and on bias ply Hoosiers. I ran Toyo RR's for years and loved them--225 all around--great tires, start at about 29psi, finish 30 minute session about 33-34psi. Get a probe type pyrometer, failing that get a good sensitive feel across the tread on all four corners to set your camber to get the temps even. Toe is just a bit of toe in front and rear, say 1/8 inch max. Hard braking prior to turn-in tends to spread the fronts in the direction of toe out....ymmv... Many thanks. Very similar to my thinking. Same with the RR's - start at 30 depending on ambient and they feel great all the way up to mid-30's. Still getting used to the 4 wheel drift rather than the 911 oversteer. Such a fun car! |
brant |
Jun 6 2021, 09:47 PM
Post
#4
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914 Wizard Group: Members Posts: 11,625 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
I'm close to 1.5 degrees negative camber on all 4 corners to get good even tire temperatures. Had earlier been running more negative but for road racing this is better--I think the autocross gang uses more negative. That said, I'm in a /6 with 215rwhp weighing 1950 pounds without me in it and on bias ply Hoosiers. I ran Toyo RR's for years and loved them--225 all around--great tires, start at about 29psi, finish 30 minute session about 33-34psi. Get a probe type pyrometer, failing that get a good sensitive feel across the tread on all four corners to set your camber to get the temps even. Toe is just a bit of toe in front and rear, say 1/8 inch max. Hard braking prior to turn-in tends to spread the fronts in the direction of toe out....ymmv... I’m Going to test some bias ply tires What cold pressure Do you use? |
wndsrfr |
Jun 7 2021, 03:26 PM
Post
#5
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Senior Member Group: Members Posts: 1,430 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region |
I'm close to 1.5 degrees negative camber on all 4 corners to get good even tire temperatures. Had earlier been running more negative but for road racing this is better--I think the autocross gang uses more negative. That said, I'm in a /6 with 215rwhp weighing 1950 pounds without me in it and on bias ply Hoosiers. I ran Toyo RR's for years and loved them--225 all around--great tires, start at about 29psi, finish 30 minute session about 33-34psi. Get a probe type pyrometer, failing that get a good sensitive feel across the tread on all four corners to set your camber to get the temps even. Toe is just a bit of toe in front and rear, say 1/8 inch max. Hard braking prior to turn-in tends to spread the fronts in the direction of toe out....ymmv... I’m Going to test some bias ply tires What cold pressure Do you use? The Hoosier folks say to be at 22psi hot for a car weighing 2200 pounds. One psi per hundred. I start st 17 to be at 22 hot. Usually have to bleed down a bit as the day goes on.. |
brant |
Jun 7 2021, 04:16 PM
Post
#6
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914 Wizard Group: Members Posts: 11,625 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
Thank you a ton!
Gives me a good starting point |
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