If you owned or drove a stock Supra on the track..

[CSG Mike]

Originally Posted by ZDan

Weight is not the only thing affecting corner speed. I've looked at minimum corner speeds from the lowest speed corners my club sees and was surprised to see 3300+ lb. big-power cars not giving up a single mph to well setup 2200 lb cars on similar compound tires, despite having to set up the corner for putting power down on exit. I hate heavy cars and love lightweight cars, but I still put my money on a 3400-lb 51.5F/48.5R Supra with -1.75 front camber on 255/275 for corner speed over a 2800-lb 55/45 FT86 with zero front camber on same/similar 215s...

You might want to look at higher resolution data.

The big tires can generate larger spikes, but not sustain the cornering. It's just physics. Or maybe the lighter cars are being underdriven, or taking a different line to preserve momentum. Tons of confounding variables.


Stock tire size vs stock tire size, the Supra will win, but when both cars are upsized to what reasonably fits in the stock body, the Supra just has zero chance. I have an immense amount of data with this specific comparison to back up the observation. Believe me, I'd love for heavier cars to corner harder!


I spend a lot more time in heavier cars than I may talk about here.

[ZDan]

Originally Posted by CSG Mike

You might want to look at higher resolution data.

I'm not talking about g's, I'm talking about corner minimum speeds. I was actually trying to make the same argument you are, that "lighter is better". It *is*, but after looking at minimum corner speeds for several of the better-driven well-prepped *fast* Miatas and Corvettes in my club at Turn 3 New Hampshire, I was quite surprised at how close they were. Pretty much equal.

Stock tire size vs stock tire size, the Supra will win,

What I been sayin...

but when both cars are upsized to what reasonably fits in the stock body, the Supra just has zero chance.

All depends on what the "rules" are. Stock vs. stock but allowing 295s on the Supra and 245s on the BRZ, my money's still on the better-balanced and front-cambered Supra. Give the BRZ some front camber and I'd bet they're close but nose-heavy BRZ is still going to somewhat overwork its fronts and underutilize rears a bit.

With downforce all bets are off of course. Same amount of downforce on a lighter-weight BRZ should kill...

[Kelse92]

Originally Posted by CSG Mike

3 radiators engine coolant on the Supra; Safe to say, it doesn't have cooling issues on track, even with huge bumps in power!

There's a car locally with all of the upgraded cooling and whatnot and on R7's in TT trim is still overheats after a few laps from what I've heard about it, but it's probably a lot to do with the climate we're in

[CSG Mike]

Originally Posted by Kelse92

There's a car locally with all of the upgraded cooling and whatnot and on R7's in TT trim is still overheats after a few laps from what I've heard about it, but it's probably a lot to do with the climate we're in

The setup and tune has a large influence on the heat generated; if he's pushing the ragged edge of the turbo, then he's gonna have big heat problems!