Tire questions, 2nd try

Indeed, size DOES matter... Especially the last number. (the radius of the rim's bead area/the radius of the hole in the middle of the tire that the rim goes into)

Aside from the problems/dangers inherent in trying (stress on the word "trying" - I doubt anybody would be able to get the bead to even PRETEND to seat due to the gap between the tire and the rim) to run a 16" tire on a 15" rim, you mean? Putting a tire with a smaller "R" number (like putting a 14" tire on your 15" rim) on it is possible, even if it's perhaps not the wisest idea in the world, but unless I've managed to misplace any concept of spatial relationships, putting a 16" tire on a

15" rim just ain't gonna work.

The 215/60R16 may indeed be close enough to interchangable with the

185/65R15 as far as rolling diameter, but only if you figure out a way to fill in an inch of gap between rubber and rim so you can blow them up to roll on them.

I figured it was blatantly obvious that getting 16" rims was part of the deal if I got P215/50R16 tires. Have I over-estimated the intelligence level of rec.autos.tech?

Does anybody know anything at all about the "Primera" or

I definitely found the Primeras and Reguls on a couple of sites. Primeras may be sourced by a company called Cavalier, but I would not venture a guess about quality, origin, etc.

According to the Tire Rack, this car was available with three different sized wheels..14,15,16 inchers. Is there some overpowering reason you want to buy new wheels to get 16 inch tires mounted? There are plenty of decent

15 inch tires.

But, yes, there is an indication that you can shift to a larger format, and your trial at the tire shop has shown you they will fit.

You will feel some differences between tires of different manufacturers, compounds, specifications. Some you may like better than others. When you read some of the reviews of various tires, you see some that the majority love but a few hate vehemently. I buy Michelins.

If you are going to make this change, I would recommend you have your suspension inspected, and any repairs made at this time, including alignment.

There are often complaints about tires and ride/handling on this group. There is no calculator that will predict whether you will like what you buy or not. Some tires are crap from the beginning. A worn suspension will make any car ride like a junkheap.

I would stick as close to the OEM sizes for that car as I could, whether they are 14, 15, or 16 inch rims. I would not buy a BF Goodrich or a Firestone tire unless they were the only things available, and I were stranded someplace. This is my own view based on very old experiences with these companies products. I have done well by avoiding them since those days.

Typically, the 50-series tires will be available in sportier models (better handling and braking, though with less tread wear and higher price) than the 65-series tires.

Do your observations apply to the parent/sister brands of these brands, namely Michelin/Uniroyal (BF Goodrich) and Bridgestone (Firestone)?

My observations are old, as are my prejudices.

I had problems with Firestone and Goodrich and would be hard pressed to try them again. Once (or a few times) burned, twice shy.

I used to like Goodyear, until I used up a set of expensive Eagles in 12000 miles. The tires just sucked. It had nothing to do with alignment, driving habits, or anything else except sucky tires.

I have never run Bridgestone but have considered them largely because of the excellent professionality they have demonstrated in F1 racing.

I have kept with Michelin over the last 20 years or so because they have given me excellent ride and tread life, good adhesion. I have no complaints with them. They have, except for the bobble last season, had good F1 credibility.

I used some house brand Discount Tire products at one time (Kelly Springfield rebrands) and they also gave surprisingly good results.

My opinions are just that. I tend to find something that works for me, and to stick with it until it stops working.