The Mrs was being teased by a friend yesterday for having fitted winter tyres to her 4x4, said friend claiming they're nothing but a marketing ploy. So, I was looking around the web for suitable reviews & stories to teach this person the facts and saw this interesting snippet on an
Autocar review...
"
There were some other qualities about the car on winter tyres that were less desirable, true. I noticed, for instance, that the speedo had become wildly ambitious; at a true 70mph it was reading almost 80mph, which meant the fuel range indicator was similarly off piste. And the car’s traction control also become neurotic, killing the power at the merest whiff of throttle, even on bone dry roads. "
Reviewer reckoned that winter tyres are worth every penny, but I'd not heard about this effect on the speedo. Anyone confirm this?