Ok i just bought a different car and right now it has 14s on it but i have have bigger ones in my garage that fit, not all the numbers match the 14s have P185/65R14 and the bigger ones have 195/65R15 So im wondering if thats gonna effect the speedonmeter and what kinda gas milage effects it'll have?
2007-11-23 09:10:32 · 5 answers · asked by packman 3 in Cars & Transportation ➔ Maintenance & Repairs
Well, that's not gonna fly. Just put the two side by side and you will see why. The difference in overall diameter is about 1.5 inches and 60 revolutions per mile, which is huge. We are talking large speedometer and odometer error - and that assumes the new wheels and tires will fit without rubbing.
The size you would need for the 15-inch rims is P195/55R15 84V with a small increase in tire inflation pressure over what is recommended with the 14-inch tires.
2007-11-23 10:21:58 · answer #1 · answered by Naughtums 7 · 0⤊ 0⤋
PMack has a very good answer, but I would like to add that if you put a lower profile tire on your car without lowering it, you may not be happy with how it looks. A good rule of thumb visually is that the gap between the top of the tire and the bottom of your fender should never be larger than the hight of your tire's sidewall. If you are concidering new rims I would assume that you are doing it for visual reasons. The question I would be asking if I were you is: How big of a tire can I fit on my car without rubbing? Be sure to include vehicle information and any modifications done to the suspension.
2016-04-05 05:12:50 · answer #2 · answered by ? 4 · 0⤊ 0⤋
The 1st number is an indication of the width of the tyre.
The 2nd number is the depth (from rim to floor) of the tyre.
The 3rd number is the diameter of the tyre.
A greater tyre width will provide more grip on the road, enhancing the ability to corner, however, this will increase the drag on a straight, thus negatively effecting, slightly, your fuel consumption.
The smaller the tyre wall (the distance from from rim to floor) also increases the speed at which corners can be taken, there is less movement available in the wall as you turn, the larger this distance the more it can twist as you put sideways forces on it. This will not effect fuel consumption. (unless you prefer to go round corners side ways)
By increasing the diameter of the tyre, you will make your cars top end speed faster (and thus your speedo marginally inaccurate), that's because the outside of a circle has to travel further than the center in the same time. try putting your finger in different positions on a fan.
This also effects acceleration times too, which 'may' in adversely effect fuel consumption.
However, these effects on fuel consumption far out way the visual benefits of bigger wheels on cars in my opinion.
Good wheels makes good cars.
2007-11-23 09:36:00 · answer #3 · answered by timrek1000 1 · 0⤊ 0⤋
They are bigger so your spedo will be slower by a couple mph. Slower acceleration and braking. Might see better gas milage but remember the spedo is off and throws off mpg calculations.
2007-11-23 09:17:43 · answer #4 · answered by Garfield 5 · 0⤊ 0⤋
YES IT WILL.
2007-11-23 09:15:57 · answer #5 · answered by Anonymous · 0⤊ 0⤋