Dinghy towing
Your vehicle is not designed to be dinghy towed (with 4 wheels on the ground) behind a motor home.

NOTICE:
To avoid serious damage to your vehicle
Do not tow your vehicle with four wheels on the ground.
See also:
Maintenance requirements
To ensure safe and economical driving, day-to-day care and regular
maintenance
is essential. It is the owner’s responsibility to perform regular
checks. Lexus recommends the following maintenance. ...
Tires
Replace or rotate tires in accordance with maintenance schedules and
treadwear.
Checking tires
1. New tread.
2. Treadwear indicator.
3. Worn tread.
The location of treadwear indicators
is sho ...
Engine/Transmission/Drivetrain/Performance
The IS 250's 2.5-liter V6 engine delivers 204 horsepower at 6,400 RPM and 185
lb.-ft. of peak torque at 4,800 rpm. The Lexus IS 350's 3.5-liter V6 offers a
more potent 306 horsepower at 6,400 RPM ...
