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Car Forum / Honda Cars / September 200495 civic coupe fuel economy
i'm trying to improve the fuel economy on my 95 civic coupe auto by changing to smaller tyres. best i can get is 36mpg with stock 15" alloys. I need to get at least 40mpg if possible. I was wondering if anyone knows if 13" or 14" alloys would fit. I think these were standard on the hatchback models. Thanks Are you putting us on? Smaller tires will appear to be giving you more mpg, but the reality is that the mpg's will be no different. Basically, smaller tires will show falsely higher speed and will show falsely more miles traveled, unless you also change the speedometer gears to adjust for the smaller tires. This is no way to get more real mpg... Al > i'm trying to improve the fuel economy on my 95 civic coupe auto by > changing to smaller tyres. best i can get is 36mpg with stock 15" > alloys. I need to get at least 40mpg if possible. I was wondering if > anyone knows if 13" or 14" alloys would fit. I think these were > standard on the hatchback models. Thanks You might be able to pick up an extra mpg or two by doing a very complete tune up (depends how over-due it is), an alignment, get tires with less width, and drive slower. I agree with the other poster that smaller wheels do nothing but make you *think* your mileage is better.. Carl > i'm trying to improve the fuel economy on my 95 civic coupe auto by > changing to smaller tyres. best i can get is 36mpg with stock 15" > alloys. I need to get at least 40mpg if possible. I was wondering if > anyone knows if 13" or 14" alloys would fit. I think these were > standard on the hatchback models. Thanks > i'm trying to improve the fuel economy on my 95 civic coupe auto by > changing to smaller tyres. best i can get is 36mpg with stock 15" > alloys. I need to get at least 40mpg if possible. I was wondering if > anyone knows if 13" or 14" alloys would fit. I think these were > standard on the hatchback models. Thanks Yes, smaller wheels would make the odometer show greater than one mile over a one mile measured course. So you it would appear that you were getting better mpg. In fact, you might get real better gas mileage if you went to larger wheels. They would make your engine rpm's slower to go the same real speed (again, your speedometer/odometer would be incorrect), and the engine might run more economically at lower rpms. But if you have a manual transmission, you might be able to run at lower rpms without changing wheels. Your best bets is to change your driving habits: conserve momentum, brake as easily as you safely can, accelerate slowly. Pretend you're a limo driver and are concerned about the comfort of your passengers. Be at one with the calm and serenity of your Honda. To answer about wheels, some of the old CRX's had 13" alloy wheels, but not in the more modern styles. They might not fit over the brakes if the brakes are bigger on the Honda's with larger wheels. The original poster never said anything about tire size, only wheel size. A smaller wheel will take a narrower, higher profile tire. A narrow tire translates to less rolling resistance, and therefore better fuel economy. Increasing tire pressure can also cut rolling resistance, but can increase tread wear (in the center of the tire) and decrease handling. There are lots of things that can be done to improve fuel economy such as lowering ride height, putting skirts on the rear wheels, filling body seams, taping off openings into the hood, fitting a sleek pan underneath the car and so on, but they are not practical in the sense of giving you a return on your investment. If the objective is to treat this as a hobby, or a science experiment, you can have lots of fun. Dan (This account is not used for email.) >> i'm trying to improve the fuel economy on my 95 civic coupe auto by >> changing to smaller tyres. best i can get is 36mpg with stock 15" [quoted text clipped - 21 lines] > but not in the more modern styles. They might not fit over the brakes > if the brakes are bigger on the Honda's with larger wheels. > i'm trying to improve the fuel economy on my 95 civic coupe auto by > changing to smaller tyres. best i can get is 36mpg with stock 15" > alloys. I need to get at least 40mpg if possible. I was wondering if > anyone knows if 13" or 14" alloys would fit. I think these were > standard on the hatchback models. Thanks Yes, smaller wheels would make the odometer show greater than one mile over a one mile measured course. So you it would appear that you were getting better mpg. In fact, you might get real better gas mileage if you went to larger wheels. They would make your engine rpm's slower to go the same real speed (again, your speedometer/odometer would be incorrect), and the engine might run more economically at lower rpms. But if you have a manual transmission, you might be able to run at lower rpms without changing wheels. Your best bets is to change your driving habits: conserve momentum, brake as easily as you safely can, accelerate slowly. Pretend you're a limo driver and are concerned about the comfort of your passengers. Be at one with the calm and serenity of your Honda. To answer about wheels, some of the old CRX's had 13" alloy wheels, but not in the more modern styles. They might not fit over the brakes if the brakes are bigger on the Honda's with larger wheels. |
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