The 75 and ZT Owners Club Forums - View Single Post - Never too old to learn about cars and new stuff.

bl52krz · 10th June 2019, 18:16

Like you, I have always put a few extra lbs of air in my tyres. Well it is free. I have my 16s gridspokes on at the moment, and they are shod with Avon Z5’s . I always check my tyre pressure every Sunday morning,habit,with everything else. Tyre pressures I noticed were 35lbs all round. I had noticed how jiggley the suspension had become, also quite hard. It was then I noticed that they are V speed rated and extra load,XL. I am pretty sure that you are right about the harder ride quality of XL rated tyres.I took them down to the correct pressure’s, 32 front 30 rear and the ride improved. I run contour wheels with Goodyear Efficientgrip on, and they are a much more comfortable tyre, and what seems a much quieter tyre. They are rated quieter,but the difference is really noticeable even with more pressure in them.

10th June 2019, 18:16	#3
bl52krz This is my second home Rover 75 cdt club + Rover 2.5 KV6 Conni SE Join Date: May 2008 Location: Birmingham Posts: 11,394 Thanks: 6,587 Thanked 2,262 Times in 1,729 Posts	Like you, I have always put a few extra lbs of air in my tyres. Well it is free. I have my 16s gridspokes on at the moment, and they are shod with Avon Z5’s . I always check my tyre pressure every Sunday morning,habit,with everything else. Tyre pressures I noticed were 35lbs all round. I had noticed how jiggley the suspension had become, also quite hard. It was then I noticed that they are V speed rated and extra load,XL. I am pretty sure that you are right about the harder ride quality of XL rated tyres.I took them down to the correct pressure’s, 32 front 30 rear and the ride improved. I run contour wheels with Goodyear Efficientgrip on, and they are a much more comfortable tyre, and what seems a much quieter tyre. They are rated quieter,but the difference is really noticeable even with more pressure in them. __________________ Great Barr, Birmingham.