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porsher
 
aston@ultrasw.c's Avatar
 
Join Date: Oct 2007
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BFG G-Force R1 application notes

I am about to install 205 and 225 R1s on my track car.

(23/31, lowered, polybronze)

Any suggestions on starting camber settings and hot pressures?

Cheers

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86 911 Race Car, with a few 993 bits in the boiler room
79 928 Race Car
88 928 Becoming a Race Car

Last edited by aston@ultrasw.c; 01-21-2010 at 10:04 AM.. Reason: brane fade
Old 01-20-2010, 02:22 PM
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KTL KTL is offline
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We've run these only a short while on a friend's car- 87 Carrera 23/30 springs, adj. rear bar, 225 front, 245 rear.

We run max camber that the rear springplates will allow (with the use of the Elephant Cambermax widgets) and started pressures in the low 30's. They climbed pretty high so we settled them back at mid 30's and they seemed to do okay with wear and grip. However i'll admit said friend is one of those set it and forget it kinda guys. Half the time he doesn't know what's a good tire pressure and adjusts his driving style (balls-out sloppy lines, but still drives the crap out of the car) accordingly instead of playing with the pressures.

The fronts have the camber (-2)and caster maxed out for the stock camber plates. Shoulder wear is prominent, as is heat (shoulders turn blue when in storage). Same tire pressures. Mid 30's work well. However raised spindles and more camber are in the works to get better results up front.
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Kevin L
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Old 01-21-2010, 09:58 AM
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subscribed...
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'85 Carrera Coupe, Marble Grey #118 JP/R6
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Old 01-26-2010, 11:26 AM
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KTL KTL is offline
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Forgot to mention i'll likely use these this coming season, so i'll post my personal experiences on my own car.
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Kevin L
'86 Carrera "Larry"
Old 01-26-2010, 12:36 PM
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Mid 30's like they tell you, as much negative camber as possible. Great tires.
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jhtaylor
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74 911 coupe. 2.7 motor by Schneider Auto Santa Barbara. Case blueprinted, shuffle-pinned, boat-tailed by Competition Engineering. Elgin mod-S cams. J&E 9.5's. PMO's.
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Old 03-12-2010, 06:41 AM
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porsher
 
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To answer my own question

32 F, 34 R hot

-3 neg F and R
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86 911 Race Car, with a few 993 bits in the boiler room
79 928 Race Car
88 928 Becoming a Race Car
Old 03-12-2010, 07:43 AM
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Yeah ,I remember with my old r1s the pressure would go raelly high after the first run group. Nitrogen is supposed to help the stability of pressure though a lot of tire shops and off road chassis shops( shocks) have this.

Old 03-12-2010, 09:56 AM
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