[DocWalt]

Originally Posted by ajaxthebetter

I have a question to ask on a related topic.

When peformance driving, is there a general RPM which, once you drop below, you downshift so as to remain on power? IE, Revs drop below 4.5k you downshift. Drop below 5k. Etc.

I ask because I put myself in a dangerous situation, both mechanically and mortally, by under revving on a downshift when going around a corner.

The situation: Navigating a diminishing radius corner, third gear but decelerating gradually as the corner got tighter. Next their comes a pretty sharp kink--I was going around 50-55, can't be sure. Revs at/around five. I go for it, initiating a quick heel/toe which I didn't match properly. Think I needed to hit near 6.5 or so, which I didn't. Don't know how much I missed by, but the rears locked as I was turning in (still on the sweeping part) and as a result my rear kicked out alarmingly quick. Thankfully I caught it. Dangerous situation I put myself in; my nose was angled directly toward the ditch. Desolate road so there were no oncoming cars ( I could see through corner.)

Anyways, haven't driven that hard since then, which was a couple weeks ago, nor have I returned to that road.

So you downshift when you dip below what RPMs when performance driving? I'd like to find out if there is a sweet spot most people adhere to.

If I'm not on the track I'll let the revs drop pretty low. I'd probably try to stay above at least 4k in hard street driving, that way you're not in the torque dip.