Tire Size Designations

Tire size may contain Prefix and / or Suffix letters as part of Tire Size Designation to identify tires designed for service conditions which may require different tire loads and inflation pressures.

Prefix Letters

AT - Indicates a tire intended for service on All-Terrain vehicles.

DH - Indicates a tire intended for agricultural and logging service (tire must be mounted on a DH drop center rim).

IF - Indicates an agricultural tire thay operates at 20% higher rated load than standard metric tires at the same inflation pressure.

K - Indicates a tire intended for 3-wheeled motorized vehicles without camber steering.

LT - Indicates a tire primarily intended for service on light trucks and pickups.

P - Indicates a tire primarily intended for service on passenger cars.

ST - Indicates a special tire for highway service trailers.

T - Indicates a tire intended for one-position temporary use as a spare only.

VA - Indicates a tire intended for agricultural and logging service (must be mounted on a VA multipiece rim).

VF - Indicates an agricultural tire that operates at 40% higher rated load than standard metric tires at the same inflation pressure.

Suffix Letters

CFO - Indicates a Cyclic Field Operation tire intended for agricultural usage.

DT - Indicates a tire primarily designed for sand and paver service.

FI - Indicates an implement tire for agricultural towed highway service.

HC - Indicates a tire with a 17.5 rim diameter intended for service on low platform trailers.

IMP - Indicates a tire designed primarily for agricultural machines, implements or trailers which are not suitable for sustained high torque service.

IND - Indicates a drive wheel tractor tire used in industrial service.

K - Indicates a compactor tire for use on 5° drop center or semi-drop center rims having bead seats with nominal minus 0.032 diameter.

LT - Indicates a tire intended for service on Trucks, Busses, Trailers and Multipurpose Passenger Vehicles used in normal highway service.

M/C - Indicates tires and rims for certain motorcycles.

MH - Indicates a tire intended for service on Mobile Homes.

ML - Indicates a tire intended for Mining and Logging vehicles used in intermittent highway service.

NHS - Indicates a tire NOT intended for Highway Service.

SL - Indicates a tire with service limited to agricultural usage.

SS - Indicates a tire for off-highway vehicles such as mini and skid-steer loaders.

ST - Indicates a special tire for highway service trailers.

TG - Indicates an Off-the-Road tire for use on rims having bead seats with nominal +0.188" diameter (not for highway service).

TR - Indicates a tire for service on Trucks, Busses and other vehicles with rims having specified rim diameter of nominal plus 0.156" or plus 0.250".