Post by
Jeff Williams »
https://forums.nicoclub.com/jeff-williams-u431.html
Tue May 06, 2003 2:46 pm
There are only really 2 sizes, in my opinion, you can use safely on the 17" rims for the Q (5,200# car) One is the 225/50/17, and the other is a 245/45/17. The 245 tire is a little smaller in diameter than the 225 tire, and I did not see any performance benefits buy going to the wider 245/45/17 tire, but I did realize a comfort benefit from the 225/50/17 tire. When you go to an 8" rim, the contact patch of the 245/45/17 and the 225/50/17 are relatively the same. The 245/45/17 tire does not look any wider.
The 40 series tire mentioned by msscom will not be enough sidewall, and can not handle the weight. Pot holes could damage the rims, or in hard cornering, the tire could roll right off the rim (or so I've heard).
Total wheel diameter of the stock 15" tires, and the 225/50/17 tires is within 1/10", and did not require an adjustment on my Q. My spedo is off, at most, 1 MPH @ 80 (it reads 81 MPH, when my wife's I30 reads 80 MPH). When youget up to 140 MPH, it is off a little more, but you are going to jail, if you are caught, anyway.
When I first went to 17" rims, I had Continental SportContact 245/45/17 tires on the car, but they made the car really darty. I then went to the Bridgestone Potenza RE92 225/50/17 tires. They were great, but did not last very long. I now have the NITTO NT450 225/50/17 ($114.00 each)on my '94 Q. They handle great in the rain, and look cool, since the tread is directional. You can get them at Discount Tire Direct. The only problem, is they are a little noisier on dry pavement, than the Bridgestone Potenza RE92 ($169.00 each). The good part is, they will last twice as long as the Bridgestones.
By the way, the Bridgestones are what Infiniti puts on the Touring models of the Q and the I.
I have 20,000 miles on the NITTO's, and the tires still look new. I have had 10 to 12 sets of NITTO tires over the years, and have never had a set I didn't like, or that didn't last 50,000 miles, or more.
Firestone Firehawk tires look to be reasonable in price, bu I do not have any experience with them.
Most people say that the Q eats tires, so get the best deal you can.
I don't mind the noise, but would not put these on my wife's car. I will stick with the Bridgestones for her.