• www.1800accident.com.au
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Video: Mercedes-Benz C 63 AMG Coupe with space-saver tyres

Renowned motoring guru Chris Harris recently had an idea for an experiment; fit 125-size space-saver tyres onto a Mercedes-Benz C 63 AMG Coupe. Seems like a great idea to us.

Harris wanted to see how the behaviour of a car can be changed simply be swapping the tyres to a new size. In the tuning world, upgrading alloys for larger items with fatter rubber is very common, but it’s interesting to see what affect it has on the car.

Conducting a very thorough test like this is always going to involve a lot of fun science and math. It completely changes, what Harris calls, the power to tyre ratio.

In this circumstance, Harris argues the C 63 AMG doesn’t come with fat enough tyres, with its 255-width items on the rear, and 235 on the front. He says there is a lot of oversteer.

Once all four tyres were swapped for 125-section ones, well, just take a look below. This is the kind of thing we all dream up during our lunch breaks. Nice work Harris.

Brett is the editor and founder of PerformanceDrive. He's obsessed with driving, having played with Matchbox cars until he was tall enough to drive a real one. After initially working as a mechanic, Brett earned a degree in journalism and entered media as an editorial assistant at Top Gear Australia magazine. He then worked at CarAdvice.com.au. His dream is to live next door to the Nurburgring in Germany.