my take;
if your brakes don't fade, 100lbs won't hurt you under braking.
if you're in a car with low torque, and the longest straight has a slow 2nd gear corner right before it, it'll hurt.
if you can add the 100lbs on the passenger floor, and still make cross weights, it won't hurt you much at all in cornering. so long as you don't use up your tires due to the added weight.
if you're at a high speed, flat, momentum track (Nelson Ledges perhaps?), the weight won't hurt much overall
the weight becomes a bigger problem for endurance racing obviously.
i would guess that 100lbs would be worth, on average across all tracks and all ITA cars, .1-.5s/lap. you might want to wipe the poo from that before you use it, as it came directly from my butt.
Travis Nordwald
1996 ITA Miata
KC Region
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