D Stock Am I out of D Stock
#2
Yep. It's the springs.
13.8 SUSPENSION
A. Standard, as defined herein, suspension springs must be used. They
may not be cut, shortened, or collapsed. Cars with swing axle suspension
may be lowered sufficiently to achieve no more than two
degrees of negative camber at rest and may use a camber compensator.
Spring perches may not vary from the OE shape within the
working part of the perch.
That's the SCCA language for the Stock class. If the H&R are "standard" in that the rate, length, etc. matches the OEM part exactly then I suppose an argument could be made, but in my experience it might be an uphill discussion.
I had fun in STX, and I bet you will also - unless you are running Nationally no big deal!
Cheers,
Charlie
13.8 SUSPENSION
A. Standard, as defined herein, suspension springs must be used. They
may not be cut, shortened, or collapsed. Cars with swing axle suspension
may be lowered sufficiently to achieve no more than two
degrees of negative camber at rest and may use a camber compensator.
Spring perches may not vary from the OE shape within the
working part of the perch.
That's the SCCA language for the Stock class. If the H&R are "standard" in that the rate, length, etc. matches the OEM part exactly then I suppose an argument could be made, but in my experience it might be an uphill discussion.
I had fun in STX, and I bet you will also - unless you are running Nationally no big deal!
Cheers,
Charlie
#3
Join Date: Aug 2012
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No national's for me or my wife. My wife will be the main autocrosser for the Mini. Just want to make sure before I ordered the magnets. Kind of a bummer. Not worth me tracking down some springs and changing them out.
So any wheel size restrictions other than the tires can't be wider than 245s right?
So any wheel size restrictions other than the tires can't be wider than 245s right?
#4
#6
Rims cannot be wider than 9" for two wheel drive STX cars.
I used to run 15x8 Enkei out front, and 15x7 out back.
I'd recommend 16x7.5 with a 215 mm tire as an option that balances the risk of a rub against the advantage of a nice well supported and adequately wide contact patch.
38 to 40 mm offset should be pretty good.
There are many options that work well though -- I did just fine on 15x7 Kosei +38 with a 205/50-15. Not at all sure the 15" rims will clear your brakes, but there are two reasons for going to a small diameter wheel for autocross:
1. lightness
2. a higher effective final drive ratio.
Point 2 matters a bit - I used to go from a street setup with a 25" tire diameter to a racing setup at 23.9" for a 4% increase in thrust. That has the same benefit as an eight horsepower gain at the crank.
Cheers,
Charlie
I used to run 15x8 Enkei out front, and 15x7 out back.
I'd recommend 16x7.5 with a 215 mm tire as an option that balances the risk of a rub against the advantage of a nice well supported and adequately wide contact patch.
38 to 40 mm offset should be pretty good.
There are many options that work well though -- I did just fine on 15x7 Kosei +38 with a 205/50-15. Not at all sure the 15" rims will clear your brakes, but there are two reasons for going to a small diameter wheel for autocross:
1. lightness
2. a higher effective final drive ratio.
Point 2 matters a bit - I used to go from a street setup with a 25" tire diameter to a racing setup at 23.9" for a 4% increase in thrust. That has the same benefit as an eight horsepower gain at the crank.
Cheers,
Charlie
#7
Join Date: Aug 2012
Posts: 32
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Rims cannot be wider than 9" for two wheel drive STX cars.
I used to run 15x8 Enkei out front, and 15x7 out back.
I'd recommend 16x7.5 with a 215 mm tire as an option that balances the risk of a rub against the advantage of a nice well supported and adequately wide contact patch.
38 to 40 mm offset should be pretty good.
There are many options that work well though -- I did just fine on 15x7 Kosei +38 with a 205/50-15. Not at all sure the 15" rims will clear your brakes, but there are two reasons for going to a small diameter wheel for autocross:
1. lightness
2. a higher effective final drive ratio.
Point 2 matters a bit - I used to go from a street setup with a 25" tire diameter to a racing setup at 23.9" for a 4% increase in thrust. That has the same benefit as an eight horsepower gain at the crank.
Cheers,
Charlie
I used to run 15x8 Enkei out front, and 15x7 out back.
I'd recommend 16x7.5 with a 215 mm tire as an option that balances the risk of a rub against the advantage of a nice well supported and adequately wide contact patch.
38 to 40 mm offset should be pretty good.
There are many options that work well though -- I did just fine on 15x7 Kosei +38 with a 205/50-15. Not at all sure the 15" rims will clear your brakes, but there are two reasons for going to a small diameter wheel for autocross:
1. lightness
2. a higher effective final drive ratio.
Point 2 matters a bit - I used to go from a street setup with a 25" tire diameter to a racing setup at 23.9" for a 4% increase in thrust. That has the same benefit as an eight horsepower gain at the crank.
Cheers,
Charlie
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#8
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If your going to STX or another class the Quaife or Giken are great investments. If anyone needs help building an AutoX MINI let us know as we have built many and even worked on Craig Wilcox National winning MINI.
#12
Yes the factory LSD is the only one legal in Stock class.
If your going to STX or another class the Quaife or Giken are great investments. If anyone needs help building an AutoX MINI let us know as we have built many and even worked on Craig Wilcox National winning MINI.
#13
It depends on the build date of your MCS. If the LSD was an option when yours was built, it'd be legal. It was an option 05-08 as I remember (we had it on an 05 and an 08), and possibly some of 09.
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