TRA Formulae
| SERVICE | TIRE TYPE | FORMULAE |
| PASSENGER CAR | P - Type | PMET_Ver4_1-08-2009 |
| T - Type | T-TYPE_02 | |
| LIGHT TRUCK | LT Metric | LTMET_Ver4 |
| LT High Flotation - 5 Degree | LT_HIFLO_Ver2 | |
| LT High Flotation - 16.5 Diameter | LT_HIFLO_165_Ver3 | |
| TRUCK-BUS | Truck-Bus Metric - Radial | TBMET_02 |
| OFF-THE-ROAD | Conventional Less than 16.00 - Bias | CONV_LS_BIAS |
| Conventional 16.00 & Larger - Bias | CONV_LG_BIAS | |
| Conventional Less than 16.00 - Radial | CONV_LS_RADIAL | |
| Conventional 16.00 & Larger - Radial | CONV_LG_RADIAL | |
| Wide Base - Bias | WB_BIAS | |
| Wide Base - Radial | WB_RADIAL | |
| 65 Series - Bias | 65_BIAS | |
| 65 Series - Radial | 65_RADIAL | |
| Grader - Conventional Less than 16.00 - Bias | CONV_GRD_LS_BIAS | |
| Grader - Conventional 16.00 & Larger - Bias | CONV_GRD_LG_BIAS | |
| Grader - Wide Base - Bias | WB_GRD_BIAS | |
| Grader - Conventional TG- Radial | CONV_GRD_RADIAL | |
| AGRICULTURAL | Steer - Conventional - Bias | CONV_STEER_BIAS |
| Drive - Conventional - Bias | CONV_DRIV_BIAS | |
| Drive - Conventional - Small Sizes - Bias | CONV_DRIV_SMALL_BIAS | |
| Drive - Conventional - Radial | CONV_DRIV_RADIAL | |
| Drive - Metric - Radial | MET_DRIV_RADIAL | |
| Drive - Metric R-4 - Bias & Radial | DRIV_MET_BIAS_RAD | |
| Implement - Conventional - Bias | CONV_IMP_BIAS | |
| Log-Skidder - Bias | LOGSKIDDER_BIAS | |
| High Flotation - Bias | AG_HIFLO_BIAS | |
| ALL-TERRAIN VEHICLE | ATV bias and radial | ATV_Ver1.xls |