Wrong.
The reason offered above on many occasions for "no DW adder" in ITR was most cars had DW. That's false. BMWs, Ponies, some Toyotas, some Nissans, and I am sure some others don't.
....
If we are going to have a DW adder it makes no sense to have it in 3 classes and not one.
I have no idea why you are so upset about this, which involves 50 lbs on cars with 200+ whp.
First, I'd like to thank Jeff, and Chip for hanging out and shooting the shit on this. Much appreciated. I remember being on the ITAC, and having different opinions about issues than other ITAC guys, and thats fine, it was always eye opening. So, I hope my comments are taken with the respect I intend them to have.
On the suspension type, I'd still like to see the breakdown. Further the cars you (sans the Ponies which get the stick subtractor) mention are all RWD, and have sophisticated suspension at the drive end. (Unless you are talking about the Celica thing, which I'm not well versed in right now), but Supras do have a multi link rear end, IIRC.
I see it the situation as:
The ITR class was always considered,
from the outset, to have more sophisticated suspensions as the 'norm', and deviations from that, such as live rear axles, (This subtractor came later after much whining on my part, and to your point Jeff about having things in one class yet not in another not making sense, here's one, it doesn't apply to the lower classes, right?) and strut fronts on cars with FWD got weight breaks. We discussed it committee (check the notes) and it was decided that we were concerned with drive end geometries, and thats why we did as we did.
So... The ops manual, as Josh points out, has a typo.
Fix that. It's just a typo. Easy fix.
And, from a proper procedure standpoint, the cars classed differently (the Vette, evidently) should be adjusted to match the previous method.
(And saying it doesn't matter because it's just 50lbs, or that it's going to spank the pony cars, is missing the core issue, and is not a reason not to set it to the proper weight, in my opinion.)
Doing otherwise, is putting the cart before the horse.
Now, if you
then decide that the judgement of the previous ITAC was wrong, either in it's count of cars to determine the "norm", or in it's application of the granularity of adders and subractors, then go ahead, research and make changes. (changing, say 12 cars is no different than changing 13 cars)
But, if thats the plan, I suggest that careful thought is given as to the weight issue. (Instead of adding to certain cars, don't add to those same cars, but give all others the equivalent break? If I follow your ideas, this shouldn't affect the E36, which was set as low as it could go, IIRC)