Buy 245/45 R21 Tyres

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Shop 245/45 R21 tyres from leading brands, compare prices and ratings, then choose fitting or delivery to suit your vehicle.

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View 4 Products

C

Fuel Efficiency / Rolling Resistance: C
Rolling resistance has a direct impact on fuel consumption. A tyre's rolling resistance score ranges from A to E.
A

Wet Grip / Braking Performance: A
A tyre's wet grip capacity is expressed in Grades from A to E. The difference in braking distances between each grade is roughly 3m - an average car length.
72B

Noise Emission / Exterior Noise: 72
The exterior noise grade of a tyre is expressed in decibels and accompanied by an external rolling noise rating - ranging from A (least exterior noise) to C (highest level of noise).

Premium Contact 6

245/45R21 Y (104)

Excellent Grip in Wet

Car

Car tyre:
These tyres have been specifically designed for fitment and use on cars.
Reinforced (XL)

Extra Load or Reinforced tyres:
These tyres are designed with a stronger sidewall, making them capable of handling more weight than your average tyre. Typically, they are classified by the letters 'XL' on the sidewall.

We can fit: 21-04-2026

Fully Fitted Price

^£298¹⁷

Quantity

B

Fuel Efficiency / Rolling Resistance: B
Rolling resistance has a direct impact on fuel consumption. A tyre's rolling resistance score ranges from A to E.
B

Wet Grip / Braking Performance: B
A tyre's wet grip capacity is expressed in Grades from A to E. The difference in braking distances between each grade is roughly 3m - an average car length.
71B

Noise Emission / Exterior Noise: 71
The exterior noise grade of a tyre is expressed in decibels and accompanied by an external rolling noise rating - ranging from A (least exterior noise) to C (highest level of noise).

Winter Contact TS870 P

245/45R21 V (104)

Car

Car tyre:
These tyres have been specifically designed for fitment and use on cars.
Reinforced (XL)

Extra Load or Reinforced tyres:
These tyres are designed with a stronger sidewall, making them capable of handling more weight than your average tyre. Typically, they are classified by the letters 'XL' on the sidewall.
Winter

Winter tyres:
These are designed for improved performance at temperatures below 7°C. At this temperature the rubber in summer tyres hardens and loses performance whilst the compound of winter tyres remains supple, maintaining grip.

We can fit: 21-04-2026

Fully Fitted Price

^£298⁷⁹

Quantity

C

Fuel Efficiency / Rolling Resistance: C
Rolling resistance has a direct impact on fuel consumption. A tyre's rolling resistance score ranges from A to E.
A

Wet Grip / Braking Performance: A
A tyre's wet grip capacity is expressed in Grades from A to E. The difference in braking distances between each grade is roughly 3m - an average car length.
72B

Noise Emission / Exterior Noise: 72
The exterior noise grade of a tyre is expressed in decibels and accompanied by an external rolling noise rating - ranging from A (least exterior noise) to C (highest level of noise).

Pilot Sport 4 SUV

245/45R21 W (104)

Excellent Grip in Wet

Car

Car tyre:
These tyres have been specifically designed for fitment and use on cars.
Reinforced (XL)

Extra Load or Reinforced tyres:
These tyres are designed with a stronger sidewall, making them capable of handling more weight than your average tyre. Typically, they are classified by the letters 'XL' on the sidewall.

We can fit: 21-04-2026

Fully Fitted Price

^£345⁶⁴

Quantity

C

Fuel Efficiency / Rolling Resistance: C
Rolling resistance has a direct impact on fuel consumption. A tyre's rolling resistance score ranges from A to E.
B

Wet Grip / Braking Performance: B
A tyre's wet grip capacity is expressed in Grades from A to E. The difference in braking distances between each grade is roughly 3m - an average car length.
71B

Noise Emission / Exterior Noise: 71
The exterior noise grade of a tyre is expressed in decibels and accompanied by an external rolling noise rating - ranging from A (least exterior noise) to C (highest level of noise).

Strada SUV

245/45R21 Y (104)

Car

Car tyre:
These tyres have been specifically designed for fitment and use on cars.
Reinforced (XL)

Extra Load or Reinforced tyres:
These tyres are designed with a stronger sidewall, making them capable of handling more weight than your average tyre. Typically, they are classified by the letters 'XL' on the sidewall.

We can fit: 21-04-2026

Fully Fitted Price

^£129³⁵

Quantity

You've viewed 4 of 4 products

245/45 R21 is a wide, 21-inch fitment that balances sharp steering with a slightly taller sidewall for everyday comfort. It is popular on high-spec SUVs and performance crossovers with large alloy wheels, where choosing the correct load index and speed rating is essential. Many tyres in this size are reinforced (XL) to suit heavier vehicles, and some ranges include run-flat options for compatible cars. If your vehicle uses a staggered set-up, check whether the front and rear sizes differ and order in axle pairs. Tyres.co.uk helps you match the sidewall markings and arrange fitting or delivery.

Buying 245/45 R21 Tyres: FAQ

What does 245/45 R21 mean on the sidewall?

It breaks down into the tyre width (245 mm), the profile (45% of 245 mm), the construction (R for radial), and the wheel diameter (21 inches). You will also see a load index and speed rating after the size, and those must meet or exceed the vehicle manufacturer requirement. Match the full size exactly and confirm the load and speed codes on your current tyres or the vehicle placard before ordering.

Which load index and speed rating are right for 245/45 R21 tyres?

Use the ratings shown on the driver door sticker or the handbook, as they are set for your vehicle weight, axle limits and intended top speed. This size is often fitted to heavier, higher-power vehicles, so higher load indexes and W or Y speed ratings are common. You can usually fit a higher load index, but you should not fit a lower one, and you should never drop below the specified speed rating.

Are 245/45 R21 tyres better as summer, winter or all-season in the UK?

Summer tyres suit warmer conditions and prioritise dry and wet grip at typical UK spring and summer temperatures. Winter tyres are designed for colder weather and are the safest option if you regularly drive when temperatures drop below about 7C. All-season tyres are a popular choice in this size for year-round use, and choosing a version marked 3PMSF gives extra reassurance in wintry conditions.

Do 245/45 R21 tyres come in XL or run-flat versions?

Yes, many options are available with reinforced construction, often labelled XL, which is commonly specified for SUV and crossover applications in this size. Run-flat versions also exist in selected tyre ranges, but they should only be chosen if your vehicle is designed for them or your manufacturer approves the switch. If you move away from run-flats, plan your puncture solution in advance so you are not left without mobility.

Should I replace two or four 245/45 R21 tyres on an AWD vehicle?

For many AWD systems, replacing all four together is the safest approach because it keeps rolling circumference and grip consistent across axles. If you only replace two, keep tread depths as closely matched as possible and follow the vehicle manufacturer guidance on which axle should receive the new tyres. Aim to keep the same brand and tread pattern across the vehicle where you can, as it helps maintain predictable handling and traction.