PAX- How does it all work?
PAX/RTP is
a method of grading on a curve. Cars are assigned handicaps based
on their make/model/year and level of modification. These handicaps
are based on actual performance of cars that have run in events, and
are determined by the national PAX administrator, currently Rick Ruth.
They are used to judge performances at the national level, and are
accepted by all competition entrants.
The most modified car is "A
Modified", which gets a score of 1.00, so it's time would not be adjusted
at all. Everything else gets multiplied by a figure that you could
call a PAX handicap. Here's an example:
Car
Class
Raw time PAX
handicap
PAX time Place
'03 Corvette
SS
50.00 .848 42.40
2
'04 Focus
HS
53.25 .789 42.01
1
'04 Dodge SRT4 STU
52.45 .821
43.06
3
So a Focus that finished three seconds slower than the Vette actually
won.
You will notice that the Street Tire classes (STS, STX,
STU) are less handicapped than the Street Prepared classes (SP), so
if you want to build a tuner car and not spring for R Compound tires,
be mindful of what mods will kick you out of the Street Tire classes.
R Compound tires will typically make a car 2-3 seconds faster, but
cost in excess of $800 plus a set of wheels!
2007 PAX/RTP Index
| SS |
0.848 |
|
ASP |
0.858 |
|
XP |
0.874 |
|
AM |
1.000 |
| AS |
0.838 |
|
BSP |
0.853 |
|
BP |
0.866 |
|
BM |
0.944 |
| BS |
0.828 |
|
CSP |
0.845 |
|
CP |
0.864 |
|
CM |
0.909 |
| CS |
0.822 |
|
DSP |
0.836 |
|
DP |
0.860 |
|
DM |
0.889 |
| DS |
0.804 |
|
ESP |
0.834 |
|
EP |
0.863 |
|
EM |
0.879 |
| ES |
0.812 |
|
FSP |
0.823 |
|
FP |
0.868 |
|
FM |
0.890 |
| FS |
0.809 |
|
|
|
|
GP |
0.847 |
|
FSAE |
0.949 |
| GS |
0.803 |
|
STS |
0.805 |
|
|
|
|
|
|
| HS |
0.789 |
|
STS2 |
0.806 |
|
|
|
|
F125 |
0.946 |
| |
|
|
STX |
0.808 |
|
|
|
|
FJ1 |
0.790 |
| |
|
|
STU |
0.821 |
|
|
|
|
FJ2 |
0.800 |
| |
|
|
SM |
0.856 |
|
|
|
|
FJ3
(FJB) |
0.833 |
| |
|
|
SM2 |
0.862 |
|
|
|
|
FJ4 (FJA) |
0.851 |
