STU Turbo Car Weights?

[Knestis]

Front wheel drive cars may reduce their minimum weight by 5%.
Front wheel drive cars with a strut type front suspension may
reduce their minimum weight by an additional 2.5%.

So does that mean that, if one is racing an FWD car w/struts, they take the restrictor table weight and subtract 5%, then subtract 2.5% of the resulting weight...

OR

...take the table weight and subtract 3%...??

K

[Greg Amy]

All deductions are reductions from the base weight. So you add the deductors first (5% + 2.5% = 7.5%) then you deduct that from the base.

So, for example, if your FWD VW GTI is running a 37mm TIR, the base weight is 2985. You're FWD so you get 5%, and you have struts so you get another 2.5%, for a total of 7.5%. 2985 minus 7.5% = 2762#.

But, if you want to argumentate with me, I'll say you take the smallest deductor first, then the largest, so you'll need to weigh 2766#

(Note that when you take them in sum, e.g., 7.5% instead of 5% then 2.5%, you get more...)

GA, offerin' his unsubstantiated Internet opinion yet again...

[Knestis]

No argumentationing from me, Greg...

Thanks!
K

[jrem72]

2003 Mazdaspeed Protege STU
Bought this car with a log book for STU?

2.0 liter turbo former Grand Am Car.

What is the weight?

Thanks for any help.
JRimage.jpg

[Greg Amy]

Varies depending on the TIR size...see GCR. - GA

[jrem72]

So with a 37mm TIR weight would have to be more than 2985? It is a FWD so can reduce weight by 5%
Sound right?