245/45 R21 Car Tyres | Cheap Prices & Free Fitting

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View 3 Products

Winter Contact TS870 P

245/45R21 V (104)

5.0/5

(1 reviews)

B
Fuel Efficiency

Fuel Efficiency / Rolling Resistance: B
How much fuel the tyre uses as it rolls. Graded A to E, where A is the most efficient and E the least.
B
Wet Grip

Wet Grip / Braking Performance: B
How well the tyre stops in the wet. Graded A to E, where A is the shortest stopping distance. Each grade is worth roughly 3 metres, about a car length.
B71 dB
External Noise

Noise Emission / Exterior Noise: B (71 dB)
How loud the tyre is from outside the car, measured in decibels. Graded A to C, where A is the quietest.

Car

Car tyre:
Designed for cars, rather than vans, 4x4s or commercial vehicles.
Reinforced (XL)

Extra Load or Reinforced tyres:
A stronger sidewall lets this tyre carry more weight than a standard tyre of the same size. Marked XL on the sidewall.
Winter

Winter tyres:
Designed for temperatures below 7°C. Summer tyre rubber hardens in the cold and loses grip, while a winter compound stays soft and holds the road in cold, wet and snowy conditions.

Fit from:18-10-2026

Fully Fitted Price

^£304^.45

Quantity

Pilot Sport 4 SUV

245/45R21 W (104)

5.0/5

(3 reviews)

C
Fuel Efficiency

Fuel Efficiency / Rolling Resistance: C
How much fuel the tyre uses as it rolls. Graded A to E, where A is the most efficient and E the least.
A
Wet Grip

Wet Grip / Braking Performance: A
How well the tyre stops in the wet. Graded A to E, where A is the shortest stopping distance. Each grade is worth roughly 3 metres, about a car length.
B72 dB
External Noise

Noise Emission / Exterior Noise: B (72 dB)
How loud the tyre is from outside the car, measured in decibels. Graded A to C, where A is the quietest.

Wet Grip Excellence

Car

Car tyre:
Designed for cars, rather than vans, 4x4s or commercial vehicles.
Reinforced (XL)

Extra Load or Reinforced tyres:
A stronger sidewall lets this tyre carry more weight than a standard tyre of the same size. Marked XL on the sidewall.

Fit from:18-10-2026

Fully Fitted Price

^£353^.92

Quantity

Strada SUV

245/45R21 Y (104)

5.0/5

(1 reviews)

C
Fuel Efficiency

Fuel Efficiency / Rolling Resistance: C
How much fuel the tyre uses as it rolls. Graded A to E, where A is the most efficient and E the least.
B
Wet Grip

Wet Grip / Braking Performance: B
How well the tyre stops in the wet. Graded A to E, where A is the shortest stopping distance. Each grade is worth roughly 3 metres, about a car length.
B71 dB
External Noise

Noise Emission / Exterior Noise: B (71 dB)
How loud the tyre is from outside the car, measured in decibels. Graded A to C, where A is the quietest.

Car

Car tyre:
Designed for cars, rather than vans, 4x4s or commercial vehicles.
Reinforced (XL)

Extra Load or Reinforced tyres:
A stronger sidewall lets this tyre carry more weight than a standard tyre of the same size. Marked XL on the sidewall.

Fit from:18-10-2026

Fully Fitted Price

^£129^.35

Quantity

You've viewed 3 of 3 products

245/45 R21 Tyre Reviews

Overall rating5.0/5

Based on 5 reviews

Kiki Mccabe

The value relative to the price is excellent.

Road Rider Strada SUV

Eben Aylott

I no longer have the car, but the tyres were in great condition when I sold it.

Michelin Pilot Sport 4 SUV

Matthias B.

These tyres are very good, providing excellent stability and traction on wet and icy roads.

Michelin Pilot Sport 4 SUV

245/45 R21 Tyre Reviews

5.0/55 reviews

Showing 1–5 of 5 reviews

About these reviews

Tyre reviews recording 245/45 R21, across tyre brands and tread ranges. Each review identifies its tyre range.

5/5

Road Rider Strada SUV

The value relative to the price is excellent.

5/5

Michelin Pilot Sport 4 SUV

I no longer have the car, but the tyres were in great condition when I sold it.

5/5

Michelin Pilot Sport 4 SUV

These tyres are very good, providing excellent stability and traction on wet and icy roads.

5/5

Continental Winter Contact TS870 P

Purchased these for a ski trip to France after having some problems the previous year. They worked excellently in a mountain blizzard and in the resort's compacted snow and ice. Grip was phenomenal and they were well worth the price. From December to March I will leave them in the car in the UK and then change to summer tyres for spring. What a great tyre that actually works!

5/5

Michelin Pilot Sport 4 SUV

I really like the new tyres. In fact I like them so much I replaced the old ones on the spot.

245/45 R21 fits large wheels on premium SUVs and some electric vehicles where the wheel is positioned at the edge of the wheel arch. The meaning of the numbers is: 245 is the width of the tyre in millimetres. 45 is the sidewall height as a percentage of 245, meaning it's 110mm. R21 is a 21-inch radial tyre. The total diameter is 754mm. Tyres.co.uk stocks 245/45 R21, including extra load versions.

Part of the size	Value	What it means
Section width	245	The width of the tyre across the tread, measured in millimetres.
Profile (aspect ratio)	45	Sidewall height as a percentage of the width - here, 45% of 245 mm (about 110 mm).
Construction	R	Radial construction, which is what nearly all road tyres use.
Rim diameter	21	The wheel diameter the tyre fits, measured in inches.

Your tyre dimensions

Measurement	Value
Sidewall height	110.2 mm (4.34 in)
Overall diameter	754 mm (29.7 in)
Circumference	2,368 mm (93.2 in)
Revolutions	679 per mile · 422 per km

Similar sizes

Size	Overall diameter
245/50 R20	753 mm · -0.1%
265/45 R20	746 mm · -1.0%
265/40 R21	745 mm · -1.1%
255/40 R22	763 mm · +1.2%
235/45 R21	745 mm · -1.2%
255/45 R21	763 mm · +1.2%