Sorry but there is no such car, every car to different levels suffer with traction issues and fwd cars on road tyres certainly don't have unlimited traction.
I have a data logger(proper one) I've tested all my cars and those calculators are never accurate.
According to that calculator my old gte should have done a 3 second flat 0-60 the reality was it did a 4.5 that was with 950kgs of weight, a lsd, and r888 tyres on a drag strip which it run 12.0 @130 mph.
Have you had yours on the strip ?
