Tire sizes? Does it matter?

Question

Hi, my car has 245 / 50 / 16 tires.

If I get 245 / 45 / 16 tires will those work just as well? I need new tires and someone is selling rims/tires of that size

What does the difference mean?

Answer 1

the tires they have are slightly shorter than yours roughly a half inch and how it will change is the car will run a bit higher RPM at cruising speed and throw off the speedometer a few miles per hour. I am a bit worried about the ECM being thrown off by the change.  

Answer 2

the 245 / 45 /16 will have a little skinnier sidewall, which will help a bit with handling.

Answer 3

the bigger/widder the tires the more traction it gives more breaking power, sometimes you also have to upgrade you shocks cause it leesens comfort

Answer 4

Look on the door of you vehicle, it tells you what tires to use

If you change them and they are a different size it could through your speedometer off.  I would call several different reputable tire stores and ask as if your going to purchase from them.

Good Luck!

Answer 5

Let me break down the tire size for you:

245= the nominal width of the tire from sidewall to sidewall in millimeters. It is not exactly 245mm because it is a nominal size that fits within a range of acceptable side wall flex and tire loading.

45= Aspect Ratio. It is the height of the sidewall (from rim to top of the surface tread) expressed as a percentage of the tire width. Therefore, 45% of 245mm = 110.25mm  For a 245/50 that means the sidewall is 122.5mm

16= wheel diameter. The tire will only fit on a 16" wheel.

So, if you replace the 245/50s with 245/45s you will have a significantly shorter tire (by about 1 inch). This would significantly shorten your tire circumference which would cause an error in your speedometer. The load range of the smaller tires will be lessened as well meaning it could be less safe if the actual Gross Weight of your vehicle surpasses this range. You will experience a harsher ride. There will also be the effect of having a lower gear ratio in your car (you'll get worse gas mileage but your acceleration will be a bit better-if you care).

Last but not least: It will probably look stupid. If you don't do anything like lower the suspension you will have this ugly fenderwell gap for all to see. My suggestion: Keep the original size. And if you want an upgrade change the whole wheel/tire package to what they call Plus One or Plus Two sizing.

Answer 6

are you getting their rims too or just their tires?  The tires will work on your stock rims, no problem.  The rims that they are selling depend on the bolt pattern.