Tyres

My 2013 Mercedes-Benz CLA200 does not ride the Melbourne metro roads as well as I'd have thought and seems a little rough. It's fitted with Bridgestone Potenza REO50 A tyres and has covered only 1000km. Could never be the model or tyres - or could it?

I am not a fan of low-profile tyres. I asked around and everyone is telling me that the bigger wheels generally give you a better grip, apart from the styling, but a normal driver possibly would not be able to feel the difference. If I buy a Nissan Qashqai Ti can I get the 17- inch wheels from the cheaper model instead?

Regarding low-profile tyres on the Nissan Qashqai, several people had these tyres on new vehicles that had to travel unsealed roads and potholed bitumen and the tyres and rims soon were seriously damaged and had to be replaced. My new Holden ute with low-profile tyres damaged three tyres and rims in three days. I find the deeper the tyre sidewall the better ride as tyres absorb a lot of the bump severity and corrugations giving better and safer driving.

I have a Nissan Qashqai TI on order and I have noticed that it comes with 19-inch wheels but with low-profile tyres so the actual wheel diameter is the same as the standard model with 17-inch wheels. I am in my senior years so go-faster wheels are of no benefit. What advantage do the 19-inch wheels have over 17s, considering that replacement tyres on 19s are about twice the price and I suspect low-profile rubber is noisier.

I have a written off 1999 AU Falcon with brand new 15-inch tyres on very nice mags and would like to put them on my 2000 AU which has 16-inch wheels and tyres. What would change if I did, and would it cause any damage?

What is the appropriate tyre pressure for my Golf GTI? I have 32psi all around and the tyre pressure warning light is flashing.

I bought a new 2012 Honda Accord but on highway trips I find the road noise, especially on coarser surfaces, appallingly loud. I thought Honda would be much better. I am thinking of trading the car, perhaps for a Holden Commodore, but will it be a quieter option? Any other suggestions in the medium or large class under $40,000 would be appreciated.

I bought a Jeep Grand Cherokee and took delivery in March. The issue I have is the spare wheel. I am aware that car makers are not obliged to provide a spare wheel at all, however Chrysler Jeep is one manufacturer that does. The buyers' guide provided by Jeep states categorically in three separate sections that the vehicle is supplied with 18-inch polished aluminium wheels and 265x60 R18 Michelin all-season tyres. Is it not reasonable to expect that all five wheels should be identical? What has been supplied as the spare is, however, a steel wheel and a Kumho tyre that is 20mm narrower than the Michelin.

Why fit run flats on the new W205 Mercedes-Benz C-Class and have no spare in Australia?

When testing cars overseas you have mentioned the cabin noise, even in expensive cars, that can be attributed to the tyres. You also suggest the harsh roads in Australia would exacerbate this problem. So which tyres would best suit our roads, from a noise perspective? And why is the government constructing roads, or resurfacing roads, with very harsh material compared to what was done in the past.