is it ok to run 195/50/15 on a 15x7 rim?
Yes. Most 195/50-15 tires are approved for mounting on rims 5.5-7.0 inches wide. If you like, you can always check the specs on the website of the tire manufacturer or a tire retailer like the Tire Rack to make sure it's approved for the particular make and model of tire you're considering.
The best tire size depends on the car they're going on, not just on the rim size. For example, on a del sol, CRX, or pre-'96 Civic, 195/50-15 is the best size because the outer diameter is a better match to that of the original stock size. On an Integra or '97-00 Civic, 205/50-15 is the best size, for the same reason. You can't just make a flat-out statement that such-and-such size is best unless you know what car they're going onto.
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Wrong.
First, wider sizes don't put "more tire on the road". The size of the contact patch - the area of the tire that comes into contact with the road - depends only on the pressure in the tires and the weight of the car, not on the width of the tire (although the shape of the contact patch differs). For example, if you have tires inflated to 33 pounds per square inch on an Integra that weighs 2640 pounds, the size of the four contact patches will total 2640/33 = 80 square inches, and that number will be the same regardless of whether the tires are 175 mm skinnies or 225 mm steamrollers.
Second, grip is primarily a function of which tires you get and how sticky they are, not how wide they are. A stickier but slightly narrower tire gives MUCH better grip than a less sticky but wider tire. A stickier 195/50-15 tire will give better grip than a less sticky 205/50-15 tire. If you want more grip, buy better, stickier tires, not wider tires. For example, there's no 205/50-15 street tire on the North American market that will give better grip than the Bridgestone Potenza RE01R in 195/50-15, because it's a stickier tire than any street tire available in 205/50-15.
First, wider sizes don't put "more tire on the road". The size of the contact patch - the area of the tire that comes into contact with the road - depends only on the pressure in the tires and the weight of the car, not on the width of the tire (although the shape of the contact patch differs). For example, if you have tires inflated to 33 pounds per square inch on an Integra that weighs 2640 pounds, the size of the four contact patches will total 2640/33 = 80 square inches, and that number will be the same regardless of whether the tires are 175 mm skinnies or 225 mm steamrollers.
Second, grip is primarily a function of which tires you get and how sticky they are, not how wide they are. A stickier but slightly narrower tire gives MUCH better grip than a less sticky but wider tire. A stickier 195/50-15 tire will give better grip than a less sticky 205/50-15 tire. If you want more grip, buy better, stickier tires, not wider tires. For example, there's no 205/50-15 street tire on the North American market that will give better grip than the Bridgestone Potenza RE01R in 195/50-15, because it's a stickier tire than any street tire available in 205/50-15.
Yup, definitely 195/50-15 for your car.
If you're looking for a supersticky tire for your car - like if you sometimes use it for autocross or track events or brisk driving on winding roads - the previously-mentioned Bridgestone Potenza RE01R is a great, supersticky tire available in that size, although a bit pricey at around $120 at the Tire Rack. Almost as sticky is the Toyo R1R, and a bit less money at around $95 at TireDeals4Less.com
If you're looking for a longer-lasting tire that still offers good performance, like for daily driving, consider the Yokohama S.drive, around $75 with free shipping at Discount Tire Direct.
These are all summer tires and should not be used in snow or extreme cold.
If you're looking for a supersticky tire for your car - like if you sometimes use it for autocross or track events or brisk driving on winding roads - the previously-mentioned Bridgestone Potenza RE01R is a great, supersticky tire available in that size, although a bit pricey at around $120 at the Tire Rack. Almost as sticky is the Toyo R1R, and a bit less money at around $95 at TireDeals4Less.com
If you're looking for a longer-lasting tire that still offers good performance, like for daily driving, consider the Yokohama S.drive, around $75 with free shipping at Discount Tire Direct.
These are all summer tires and should not be used in snow or extreme cold.
Yup, definitely 195/50-15 for your car.
If you're looking for a supersticky tire for your car - like if you sometimes use it for autocross or track events or brisk driving on winding roads - the previously-mentioned Bridgestone Potenza RE01R is a great, supersticky tire available in that size, although a bit pricey at around $120 at the Tire Rack. Almost as sticky is the Toyo R1R, and a bit less money at around $95 at TireDeals4Less.com
If you're looking for a longer-lasting tire that still offers good performance, like for daily driving, consider the Yokohama S.drive, around $75 with free shipping at Discount Tire Direct.
These are all summer tires and should not be used in snow or extreme cold.
If you're looking for a supersticky tire for your car - like if you sometimes use it for autocross or track events or brisk driving on winding roads - the previously-mentioned Bridgestone Potenza RE01R is a great, supersticky tire available in that size, although a bit pricey at around $120 at the Tire Rack. Almost as sticky is the Toyo R1R, and a bit less money at around $95 at TireDeals4Less.com
If you're looking for a longer-lasting tire that still offers good performance, like for daily driving, consider the Yokohama S.drive, around $75 with free shipping at Discount Tire Direct.
These are all summer tires and should not be used in snow or extreme cold.
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