PCA 964 stock class wheel/tire sizes?
05-20-2011, 12:44 PM
#16
Rennlist Member
Been slammed at work and just getting back to this. I emailed Keith V who is the PCA RSA guru and runs rsamerica.net and he confirmed that 9” wheels were not an option on the RSA.
To expand on what Dan posted, Walt said he will look into it further but believes this is the case for RSAs and C2s/C4s, that only 7s and 8s were the max available as options for RSAs, C2s and C4s, so 8s and 9s are the max for them in stock class. It appears Bills chart (and post) is correct. If Walt comes back with any different info I will post here.
This is the rule but April 1 - June 1 is the Period for submission of proposed rules changes. crrules@pca.org
I’m going to submit that any size wheel that fits (meaning that the top of the tire does not stick out of the fenders) without sheet metal modification should be legal in stock class. This will help them with not having to figure out what wheels were options on different models and then (actually) enforcing the rule. I’d like to go up to 9s and 10s when the budget allows and run wider tires, at least rear tires, if this is passed.
To expand on what Dan posted, Walt said he will look into it further but believes this is the case for RSAs and C2s/C4s, that only 7s and 8s were the max available as options for RSAs, C2s and C4s, so 8s and 9s are the max for them in stock class. It appears Bills chart (and post) is correct. If Walt comes back with any different info I will post here.
This is the rule but April 1 - June 1 is the Period for submission of proposed rules changes. crrules@pca.org
I’m going to submit that any size wheel that fits (meaning that the top of the tire does not stick out of the fenders) without sheet metal modification should be legal in stock class. This will help them with not having to figure out what wheels were options on different models and then (actually) enforcing the rule. I’d like to go up to 9s and 10s when the budget allows and run wider tires, at least rear tires, if this is passed.
05-21-2011, 12:52 PM
#17
Rennlist
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Been slammed at work and just getting back to this. I emailed Keith V who is the PCA RSA guru and runs rsamerica.net and he confirmed that 9” wheels were not an option on the RSA.
To expand on what Dan posted, Walt said he will look into it further but believes this is the case for RSAs and C2s/C4s, that only 7s and 8s were the max available as options for RSAs, C2s and C4s, so 8s and 9s are the max for them in stock class. It appears Bills chart (and post) is correct. If Walt comes back with any different info I will post here.
This is the rule but April 1 - June 1 is the Period for submission of proposed rules changes. crrules@pca.org
I’m going to submit that any size wheel that fits (meaning that the top of the tire does not stick out of the fenders) without sheet metal modification should be legal in stock class. This will help them with not having to figure out what wheels were options on different models and then (actually) enforcing the rule. I’d like to go up to 9s and 10s when the budget allows and run wider tires, at least rear tires, if this is passed.
To expand on what Dan posted, Walt said he will look into it further but believes this is the case for RSAs and C2s/C4s, that only 7s and 8s were the max available as options for RSAs, C2s and C4s, so 8s and 9s are the max for them in stock class. It appears Bills chart (and post) is correct. If Walt comes back with any different info I will post here.
This is the rule but April 1 - June 1 is the Period for submission of proposed rules changes. crrules@pca.org
I’m going to submit that any size wheel that fits (meaning that the top of the tire does not stick out of the fenders) without sheet metal modification should be legal in stock class. This will help them with not having to figure out what wheels were options on different models and then (actually) enforcing the rule. I’d like to go up to 9s and 10s when the budget allows and run wider tires, at least rear tires, if this is passed.
__________________
Larry Herman
2016 Ford Transit Connect Titanium LWB
2018 Tesla Model 3 - Electricity can be fun!
Retired Club Racer & National PCA Instructor
Past Flames:
1994 RS America Club Racer
2004 GT3 Track Car
1984 911 Carrera Club Racer
1974 914/4 2.0 Track Car
CLICK HERE to see some of my ancient racing videos.
Larry Herman
2016 Ford Transit Connect Titanium LWB
2018 Tesla Model 3 - Electricity can be fun!
Retired Club Racer & National PCA Instructor
Past Flames:
1994 RS America Club Racer
2004 GT3 Track Car
1984 911 Carrera Club Racer
1974 914/4 2.0 Track Car
CLICK HERE to see some of my ancient racing videos.
05-21-2011, 01:11 PM
#19
Rennlist
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I think that this guy would have just a little more grip than the current prepared rules allow.
05-21-2011, 01:45 PM
#21
Rennlist Member
C. Fender flaring is allowed using factory material
I don't know but would assume that would be showroom car fenders (dealership sold 911 turbos), not aftermarket or GT2/ RSR parts in Prepared. More tire = more drag also so althlough the lap times might come down so will the top speed if a dramatic increase in tire width and most passing is done at the end of the straights (under braking but the higher speed will have the advantage there me thinks). I guess there is a balance and that sounds like an expensive experiment....although I'm sure Bob T could shed some light on tire width vs. lap time vs. top speed in racing, even though he is GT /GTS.
