Yes they are.

you do NOT want those tires.....given if they are still made the same way...I tested these before we had a spec tire and I had horrible luck with them. They dont last and the wear was all over the place. I ran several pairs and sets to make sure I wasnt just getting a bad set....wrong, they all had the same issue.

here is a pic of mine on my USGT ride back in the day(2009ish)....great value for premount and different rims too...but not worth it to me...

I don't think they are the same actual tire altho they may 'look' the same. Unlesss the tire has RIDE molded into the sidewall I would not expect them t be the same. Also considering DYNAMITE makes their own tires.

$0.02

That weight limit is killing us that like to run older chassis, it is hard getting a TB03 under 1390..

10g isn't going to break you. My TC3 is 1480g running stock (1350g limit). 130g over and it's still not the end of the world.

+1

My Tc3 is 1405. I run 25.5Tc and finish up front every weekend. Don't stress the weight. Focus on driving.

When running an older or heavier car, you often have to get creative to put the car on a diet. Getting rid of metal hop-up parts that don't really improve performance is usually a good place to start. A good example is getting rid of a motor heat sink and just use a cooling fan blowing directly on the motor.

If you are using a tub chassis shaft drive car and can't reach your target weight, it is a good idea to lighten up the drive-line components. If you can replace the drive shaft or dog bones with a graphite version, that can help the acceleration of the car. If possible, you can also try to lighten the diff with a lighter version. Often gear diffs can be heavier than a ball diff. You might not be able to get the car as light as you want, but if you make the drive line more efficient you might be able to lessen any disadvantage.

There are other areas for weight savings such as bodies, how much paint is used, and choosing a lighter battery. Weight varies a lot between lipo batteries, so don't forget to check the specs before purchasing which should include weight in grams. If all else fails, a good quality shorty lipo might be worth using.

But at the end of the day, have fun running what you got and beating people with newer and/or lighter cars because you drove a better race.

My IRS TC3 is 1387. I got the last carbonfiber chassis conversion kit IRS had in stock.


TC4 shock towers
TC4 chassis braces
USGT tires and wheels
5000mah 2S
21.5 motor
PF Z28 body
TC6.1 shocks
Aluminum diffs

My R-Factor tc4 is 1357g. With titanium screws and a 6400mah team powers battery.

40G actually

Limit is 1350

I understand your point though.

That part I do get to enjoy


Right now:

All Alum turnbuckle set
Lightweight CVD
Ball diffs
Battery tape instead of battery strap and hardware
Removed mirrors from Body
Carbon Fiber Bumper brace
Carbon Fiber Rear shock tower
Carbon reinforced front support
Alum motor mount instead of cast
Alum drive shaft and rear output instead of steel
Alum Hex screw hardware

With everything loaded in it with Stock NSX body I have it down to 1372

That I can live with.

Unfortunately I did this after the last race I ran, and those mods cost almost as much I paid for the car...

I hope you guys are running some other organization's rules......:weird:

Weight Specification:
4wd Minimum 1380g in race-ready trim
Fwd no minimum weight
http://www.usvintagetransam.com/rule...es2-1-2017.pdf

Which rule book??
I went back and checked to make sure, and even the 1-1-2017 rules had no reference to ROAR t2 weight. 2015 rules were 1450g and again no reference roar weights.

No trying to pick on anyone, but for clarity, and to avoid confusion the link to the rules are below.

this is the correct information
http://www.usvintagetransam.com/rule...es2-1-2017.pdf

Area any of the Mcallister Dayton Prototype bodies legal for usgt?

Reedy has 2 types of 21.5 1st one has a 273 rotor that they use for TCS races (spec)and they have 21.5 with stock 272 rotor.So you have to use the stock Reedy with the stock (272) rotor