This article is from the Toyota Tundra FAQ, by Steve Yee with numerous contributions by others.
There has been numerous discussions as to whether or not the Tundra is a "full
size truck". Many automobile magazines can't decide on this either, since Car
and Driver compares the Tundra with the Dodge Dakota, while Motor Trend,
Automobile Magazine, and Road and Track lumps the Tundra with the Chevy/GMC
1500, Dodge Ram 1500, and Ford F150.
GMC's 2000/2001 product literature directly compares the Tundra against the GMC
1500 Extended Cab, and both GMC and Ford are specificially targeting the Tundra
in their ads, so obviously the some of the competition considers it a full size
In a realistic, dimensioned based sense, the Tundra is roughly 95% of the size
of the Chevy/GMC, Dodge Ram 1500, and Ford F150, and is about 4-5% larger than
the T-100. It's towing and other capabilities are the same as the mentioned
trucks in the same class, so in the minds of most people, the Tundra is really
a full size truck. In most states, the Tundra is registered in the same class
as the aforementioned trucks.
The National Transportation Safety Board and the Insurance Institute for
Highway Safety also consider the Tundra a full sized truck.
This discussion has caused flame wars in quite a few online forums, including
www.f150online.com, Edmunds Town Hall, and www.ls1.com.