Hey I have a rookie question about tyre pressure.
I got my mk5 GTI ed30 in Oct last year. When I picked it up from the dealer, I found the tyres pressure a little bit lower than recommanded on the log book using my own pressure gauge. I drove it to National Tyre and got confirmtion on my suspection. And I told the staff to over-inflate the tyres a little above standard to get a more sporty ride. After that I found my MPG was improving and the cornering was neater. I was quite happy about it although that compromised the ride comfort a little.
I drove the car to the dealer for service last month and later found they lowerd pressure again. I look it up on the net and someone seems to be promoting a 10%-minus principle, which means you will make the best of the performance of your tyre when the pressure is 10% less than the maximum pressure it could afford. On that basis, I will have to pop my tyre up to 47 psi and the recommendation on the log book is 36psi, which is a huge different.
Which should I stick to?
