News

2015 SCCA Autocross PAX Index

24 Nov , 2014   David  

The 2015 version of the autocross index you love to hate is now out. The PAX/RTP index is used to compare SCCA event results across classes. This year all street tire and stock classes now require a minimum tread wear rating of 200 on all tires. Also gone are the race tire ‘stock’ classes.

Stock Classes

SS
0.835
AS
0.829
BS
0.826
CS
0.814
DS
0.812
ES
0.808
FS
0.810
GS
0.806
HS
0.796
 

Street Touring

STF
0.801
STS
0.828
STX
0.831
STR
0.838
STU
0.844

Street Prepared

SSP
0.871
ASP
0.865
BSP
0.863
CSP
0.861
DSP
0.854
ESP
0.849
FSP
0.840
 

Race Tire

SSR
0.859
 

Classic American Muscle

CAM-C
0.816
CAM-T
0.825
CAM-S
0.836
 

Karts

KM
0.955
JA
0.878
JB
0.842
JC
0.734

Prepared

XP
0.905
BP
0.881
CP
0.864
DP
0.879
EP
0.874
FP
0.880
 

Street Modified

SMF
0.853
SM
0.870
SSM
0.882
 

Modified

AM
1.000
BM
0.964
CM
0.919
DM
0.918
EM
0.922
FM
0.926
FSAE
0.984


For historical indexes and more information Rick Ruth’s PAX/RTP

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