BRIDGESTONE S21
TIRE TEST
P94
FACE VALUE
The S21 is primarily a road tire that can
handle the odd wet weather day so the
Bridgestone engineers have created a tread
pattern they claim offers greater stability
over the outgoing S20 tire and a better
seat-to-land ratio (in case you didn't know,
when tire companies talk about land-to-sea
they are referring to the amount of rubber on
the road versus the amount of tread). The
tire's grooves have been repositioned on
the carcass so as to give more tire on the
ground at maximum lean angle, thus aiding
stability on braking and acceleration.
Bridgestone has attempted to maintain
the wet weather capabilities of the old
S20EVO and doesn't claim any major
breakthrough in this area. The majority of
concern regarding the tread design was
based around improving the mileage and dry
weather performance.
The new tread pattern gives more tire on
the ground at big lean than the S20EVO.
TIRE SIZES
Here's a chart of the available tire
sizes, but please note, there are two
tire sizes of S21 that Bridgestone
will not be importing into the North
American market—the 110/70ZR17 and
150/60ZR17 sizes. These sizes will
remain in the H-Rated Battlax S20EVO
line (along with the 140/70R17).
S P O R T T I R E S S I Z E R A N G E
