The car has an approval for the complete vehicle with certain combinations of wheel rims and tyres.
| 235 | Tyre width (mm) |
| 45 | Ratio between tyre wall height and tyre width (%) |
| R | Radial ply |
| 18 | Rim diameter in inches |
| 98 | Codes for the maximum permitted tyre load, tyre load index (LI) |
| W | Speed rating for maximum permitted speed, speed rating (SS). (In this case 270 km/h (168 mph).) |
| Q | 160 km/h (100 mph) (used only on winter tyres) |
| T | 190 km/h (118 mph) |
| H | 210 km/h (130 mph) |
| V | 240 km/h (149 mph) |
| W | 270 km/h (168 mph) |
| Y | 300 km/h (186 mph) |
Approved tyre pressures
| Engine | Tyre dimension | Speed | Load, 1-3 persons | Max. load | ECO pressure(Economical driving) | ||
|---|---|---|---|---|---|---|---|
| Front kPa (psi)(In certain countries the “bar” unit is used alongside the SI unit “Pascal”: 1 bar = 100 kPa) | Rear kPa (psi) | Front kPa (psi) | Rear kPa (psi) | Front/rear kPa (psi) | |||
| All engines | 215/60 R16 225/50 R17 235/45 R18 235/40 R19 245/35 R20 | 0-180 km/h (0-112 mph) | 230 (34) | 230 (34) | 260 (38) | 260 (38) | 260 (38) |
| Temporary Spare Tyre | max 80 km/h (max 50 mph) | 420 (60) | 420 (60) | 420 (60) | 420 (60) | – | |
Tyres’ rotation direction
The arrow shows the tyre’s direction of rotation.
- Tyres must rotate in the same direction during their entire service life.
- Tyres should only be switched between front and rear positions, never between left and right-hand sides, or vice versa.
- If the tyres are fitted incorrectly, the car’s braking characteristics and capacity to force rain and slush out of the way are adversely affected.
- The tyres with the deepest tread depth should always be fitted to the rear of the car in order to reduce the risk of oversteer skidding.
- On cars with different front and rear tyre or wheel dimensions, it is not permitted to change position between front and rear wheels.
- Volvo recommends that the rear tyres do not have substantially less tread depth than the front tyres in order to reduce the risk of oversteer skidding when driving on wet roads.
Note
Make sure that the front and rear axles have the same type, dimension and make of tyres.
Cars with different front and rear tyre dimensions must have the same type and make of tyres on the front and rear axles.
Tread wear indicators on the tyres
A tread wear indicator is a narrow elevation across the longitudinal grooves of the tyre’s tread pattern. On the side of the tyre are the letters TWI (Tread Wear Indicator). When the tyre’s tread depth is down to 1.6 mm (1/16 inch), the tread will be level in height with the tread wear indicators. Change to new tyres as soon as possible. Remember that tyres with little tread depth provide very poor grip in rain and snow.
Dimension designation for wheel rim
The car has an approval for the complete vehicle with certain combinations of wheel rims and tyres.
All wheel rims have a dimension designation, for example: 8Jx18x42.
| 8 | Rim width in inches |
| J | Rim flange profile |
| 18 | Rim diameter in inches |
| 42 | Off-set in mm (distance from wheel centre to wheel contact surface against the hub) |
Minimum permitted tyre load index and speed rating for tyres
| Engine | Minimum permitted load index (LI)(The tyre’s load index must be at least equal to or greater than indicated in the table) | Minimum permitted speed rating (SS)(The tyre’s speed rating must be at least equal to or greater than indicated in the table) |
|---|---|---|
| B3 (B420T4) | 94 | H |
| B4 (B420T5) | 94 | H |
| B4 (B420T6) | 94 | H |
| B4 (D420T8) | 94 | H |
| B5 (B420T2) | 94 | H |
| B5 AWD (B420T2) | 94 | H |
| B5 AWD (B420T10) | 94 | H |
| B6 AWD (B420T) | 94 | H |