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|
| NT05R SIZE CHART |
| TIRE |
TREAD |
DIAMETER: |
WIDTH: |
APPROVED |
| SIZE: |
DEPTH: |
|
|
RIM WIDTH: |
| 275/40R17 |
6/32 |
25.79 |
11.02 |
9.0-9.5-11.0 |
| 315/35R17 |
6/32 |
25.71 |
12.48 |
10.5-11.0-12.5 |
| 285/40R18 |
6/32 |
27.09 |
11.42 |
9.5-10.0-11.0 |
| 305/45R18 |
6/32 |
28.9 |
12.05 |
9.5-10.0-11.5 |
| 315/40R18 |
6/32 |
28.03 |
12.6 |
10.5-11.0-12.5 |
| 345/30R19 |
6/32 |
27.36 |
13.43 |
12.0-13.5 |
| 315/35R20 |
6/32 |
28.74 |
12.74 |
10.5-11.0-12.5 |
 Unlike tracks elsewhere in...  Unlike tracks elsewhere in the country, California only opens its drag racing venues occasionally-not weekly. That means lots of illegal street racing and overcrowding on the days they are open. We got to California Speedway in Fontana at 5:30 a.m., and found 200 cars already in front of us. It's a good thing we didn't have to change tires once we got in. It was nap time!  We got teched in, emptied...  We got teched in, emptied the Street Sweeper '68 Chevelle of all extraneous contents in the pit area, then rushed off to the staging lanes. Then we waited almost five hours to make our first pass at 10:30 a.m.  During nine hours of waiting,...  During nine hours of waiting, we got to make a total of two quarter-mile passes on the NT05Rs: The first being a 12.90/112.7 with a 2.39 60-foot time. The tire pressure in the NT05Rs was set at 30 psi, and that's just plain too high for the track. We set the pressure down to 15 psi for our second run, and four hours later ran an 11.80/116.7 with a 1.87 60-foot time. As with our previous test sessions, we shifted the TCI Turbo 400 at 5,800 rpm, but launched at a much more conservative 1,800 rpm (versus 2,500 rpm for slicks). Note the fullsized street tires and wheels up front-the first time we've ever raced the Chevelle without skinnies.
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