Jpro325 t1_ja94oj8 wrote on February 27, 2023 at 7:29 PM

I think anyone who has driven a manual transmission for performance knows/feels engine braking is 100% a thing. Drop the gear to the lowest you can without red-lining (80mph?, drop to 3rd), then 100% brakes. A lot of momentum/energy is absorbed from pushing all the components of the transmission, flywheel and engine at a disadvantageous gearing. Similarly, if you were to put it in neutral and try 100% braking it’d take much longer to stop. That difference is the engine breaking.

Bensemus t1_ja9qh7l wrote on February 27, 2023 at 9:46 PM

Stopping distance is determined by your tire grip. Brakes can already lock up all for tires. Modern and even most old cars are over braked. There's nothing gained from engine braking as it all relies on the tires maintaining traction.

To control speed outside of emergency stopping engine braking is very useful.