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* '''/def/vehicle/r_wheel/*.sii''' (rear wheels for AI trucks)
* '''/def/vehicle/tr_wheel/*.sii''' (wheels for trailers)
* '''/def/vehicle/trailer_wheel/f_tire/*.sii''' (front tires for owned trailers)
* '''/def/vehicle/trailer_wheel/r_tire/*.sii''' (rear tires for owned trailers)
== Attributes ==
|roll_resistance
|float
|5.5
|Tire rolling resistance in kg/t (EU Tyre Labelling Regulation 1222/2009)
|-
|wet_grip
|float
|1.0
|Tire wet grip performance (EU Tyre Labelling Regulation 1222/2009)
|-
|noise_volume
|float
|73.0
|Tire rolling noise in dB (EU Tyre Labelling Regulation 1222/2009)
|-
|wheel_shift
|float
|0.0
|Offset of the tire centerline from the model origin (based on the left side variant) to correctly generate the wheel collision. Make sure that the 'bb' locator is positioned at the outer edge of the tire.
|}
|Empty
|}
== Calculating Rolling Radius from RPM or RPK ==
To get a correct rolling radius for accurate performance, it is possible to use the Revolutions per Mile (RPM) or per Kilometer (RPK) figure published by the tire manufacturer. This is used to set the position of the ''bb'' locator in the wheel model.
===From RPM===
The rolling radius in meters is given by:
r<sub>rolling</sub> = 1609.34 ÷ ( RPM × 2 × π )
===From RPK===
The rolling radius in meters is given by:
r<sub>rolling</sub> = 1000 ÷ ( RPK × 2 × π )
== Related Classes ==
*[[Documentation/Engine/Units/accessory_rim_data|accessory_rim_data]]
