235/40 R21 Tyres

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Eco Contact 7 S

235/40R21 H (98)

4.4/5

(8 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

^£262^.15

Quantity

You've viewed 1 of 1 products

235/40 R21 Tyre Reviews

Overall rating4.4/5

Based on 8 reviews

Niam Hurley

Wear is good and very stable on the motorway.

Continental Eco Contact 7 S

Suhana Carol

The grip, as well as the overall experience of the wear, has been great. My friend recommended the last set, but these Continentals absolutely blow them out of the water,…

Continental Eco Contact 7 S

Melissa Md

The performance of the tyres is good, however, their wear could be improved.

Continental Eco Contact 7 S

235/40 R21 Tyre Reviews

4.4/58 reviews

Showing 1–8 of 8 reviews

About these reviews

Tyre reviews recording 235/40 R21, across tyre brands and tread ranges. Each review identifies its tyre range.

5/5

Continental Eco Contact 7 S

Wear is good and very stable on the motorway.

5/5

The grip, as well as the overall experience of the wear, has been great. My friend recommended the last set, but these Continentals absolutely blow them out of the water, particularly in the case of the heavy rain.

3/5

Continental Eco Contact 7 S

The performance of the tyres is good, however, their wear could be improved.

4/5

Continental Eco Contact 7 S

The peace of mind was worth every cent. Fitting was straightforward and stress free. Would absolutely recommend this service.

4/5

Continental Eco Contact 7 S

Tyres are very smooth and also perform very well on the road.

5/5

Continental Eco Contact 7 S

Pretty good, but I was looking for more grip in the corners.

4/5

Continental Eco Contact 7 S

I've been handling them great. I wish they lasted longer in terms of durability on my everyday drive. They're really close to being ideal.

5/5

Continental Eco Contact 7 S

I was very happy. Got delivery at my local garage before the expected time.

235/40 R21 is a low-profile tyre for cars with 21-inch wheels. The first number represents width. So 235 means the tyre is 235mm wide. 40 is the sidewall height in relation to the width, so with 40, the height is 40% of the width (235) which is 94mm. R21 means a radial tyre for a 21-inch rim with an overall diameter of 721mm. At Tyres.co.uk, we have 235/40 R21, including the XL versions.

Part of the size	Value	What it means
Section width	235	The width of the tyre across the tread, measured in millimetres.
Profile (aspect ratio)	40	Sidewall height as a percentage of the width - here, 40% of 235 mm (about 94 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	94.0 mm (3.70 in)
Overall diameter	721 mm (28.4 in)
Circumference	2,266 mm (89.2 in)
Revolutions	710 per mile · 441 per km

Similar sizes

Size	Overall diameter
235/45 R20	720 mm · -0.3%
245/45 R20	728 mm · +1.0%
245/40 R21	729 mm · +1.1%
255/40 R20	712 mm · -1.3%
255/35 R21	712 mm · -1.3%
255/30 R22	712 mm · -1.3%