dave99
Established Member
- Joined
- Oct 24, 2022
- Messages
- 183
- Reaction score
- 148
- Points
- 58
- Location
- Manchester
- Driving
- MG4 Trophy LR
I assume this is a copy/paste from the ICE handbooks 

Altitude: Your engine delivers less power at higher
altitude. If you tow a trailer in a mountainous area you
should reduce the combined vehicle and trailer weight by
10 % for every 1000 m of elevation.