Hi Ian, they are 175R 16C. I have been told they are Taxi tyres and my local tyre fitter said I should not have any problems too. There are tubes in them and I need to get the little grommets for the valve hole done as the valve is smaller than the hole in the rim. Like most things on our car the rims are pretty much rust free. I will need to get the wheels balanced as it looks like several weights have fell off. These tyres make the steering heavier but since I am putting power steering on I am not too bothered. Shame you are not closer since you could have tried them on yours and seen if they made your PS heavier.