A question about wheel and tyre sizes.

[johnny fotze]

I need to replace a couple of tyres, size 195/65/r15, on steel wheels. I've got a set of alloys in the shed that I was going to put on the car. However, at least two of these also need rerubbering, size 195/50/r15. I'd rather have the alloys on the car, but with the larger diameter tyres. My question is- will the 195/65's on the steely's swap straight onto the alloys? (the good two I mean, the baldies will need replacing whatever)

[TooMany2cvs]

The /65 and /50 bit is the sidewall height of the tyre, as a %age of the tread width. It's the least of the three relevant to the wheel you're putting the tyre on.

So, yep, there shouldn't be any problem at all.

[stupidbutkeen]

Should not be a problem if the alloys take a 195 size as well,but your speedo may read a bit out.

[xRIEx]

They'll be fine.

[ging84]

depends on the wheel
the alloys may be slightly narrower
if it is, the higher profile tyre will most likely still go on unless the width of the other rim was already the minimum recommended rim width for that tyre size.
If it is narrower then you end up with a slightly larger diameter of wheel overall, so you'd have to worry about clearance issues.

Also depends what sort of wheels, modern wheels almost all have the same bead type so that is unlikely to be an issue, but if you are dealing with something a bit older, then that might be an issue.

it doesn't sound to me like these alloys came from a similar car
are you aware you can't just put any wheels on any car? you need to make sure you have wheels with the correct offset and pcd for your car, the wrong pcd and they won't go on, and the wrong offset and they may go on, but may come into contact the body work or mechanical parts.
And going from steel to alloy of the same size, you also have to worry about clearing the brake calipers

[johnny fotze]

The wheels came off a small pug (206, non standard) and are going on a larger pug (406). They have the same pcd and similar offset. The lower profile of the tyres leaves too much empty space in the arch and looks a little odd, hence my need for larger tyres.