关于轮胎尺寸的问题!
- 主题发起人 miamia
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185 is the width, 14 is the diameter of the rim, 65 is the wall:width ratio (the wall is 65% of the width). I believe 185/70/14 is cheapter than 185/65/14 and has lower handling performance. However it will change the overall size of the tire and affect your odometer. Manufactory doesn't agree to change the tire size also because it applies different load to the brake and ABS.
Tire Explanation
I'm confuse why 月下独酌 doesn't agree that the tire width, or rim size can be change.
Basically, for tire, you have following choice:
1. Speed (normally is H = 210 km/h)
2. Load index (normally is 83 = 487 kg)
3. Width (normally is 195 mm)
4. Rim size (normally is 14" or 15")
For choice 1 and 2, you can maintain your tire size.
For choice 3, you can choose a wider tire for better grip, such change from 185 mm to 195 mm, which will increase fuel consumption by 0.x% for my car. Or decrease to 175 mm, to save fuel, or for spare tire (lighter). Wider tire is a little heavier to turn on your steering feel, but it only obvious when you park.
For choice 4, you can choose different rim size, which eventually you have to change your tire size. There are alloy rim which varies from 15" - 21". 17" is becoming standard in mid range sedan, or people who like bigger and more standout rim. Alloy rim is lighter, which improve handling. Ceramic compound rim is for high-end sport car, which is hard to find in the market.
Whenever you change the tire width, or rim size, the middle number, which is the aspect ratio, will decrease by 5 for each size increase.
The list I posted are assuming:
1. tire width - 1 size larger
2. rim - 1 size larger
3. tire width & rim - 1 size larger
4. tire width - 1 size smaller
Michelin has a toll free number to help you choose their tire as well: 1-888-871-4444
Bridgestone homepage has more information about the explanation for the tire number. I navigated to the exact URL, and save you some time. Anyway, it is fun to read up on tire company for their technology:
http://www.tiresafety.com/passenger.asp
Entry class car is normally doesn't equip with expansive tire, or rim for economy reason. It is up to individual driver to upgrade themselves. 16" and 17" rim for Civic is an option which cost $1.4k - $1.6k (w/ tax). If you buy yourself, then it may cost $1k - $1.2k. However, insurance may charge you a few hundred more for customizing the car. Reason due to too standout, and increase probability of car thief. One option is to buy original Honda Civic 17" rim, which may prevent the additional insurance cost. I guess.
Insurance doesn't charge more to upgrade wider tire, though
Feel free to correct with reason and justification.
I'm confuse why 月下独酌 doesn't agree that the tire width, or rim size can be change.
Basically, for tire, you have following choice:
1. Speed (normally is H = 210 km/h)
2. Load index (normally is 83 = 487 kg)
3. Width (normally is 195 mm)
4. Rim size (normally is 14" or 15")
For choice 1 and 2, you can maintain your tire size.
For choice 3, you can choose a wider tire for better grip, such change from 185 mm to 195 mm, which will increase fuel consumption by 0.x% for my car. Or decrease to 175 mm, to save fuel, or for spare tire (lighter). Wider tire is a little heavier to turn on your steering feel, but it only obvious when you park.
For choice 4, you can choose different rim size, which eventually you have to change your tire size. There are alloy rim which varies from 15" - 21". 17" is becoming standard in mid range sedan, or people who like bigger and more standout rim. Alloy rim is lighter, which improve handling. Ceramic compound rim is for high-end sport car, which is hard to find in the market.
Whenever you change the tire width, or rim size, the middle number, which is the aspect ratio, will decrease by 5 for each size increase.
The list I posted are assuming:
1. tire width - 1 size larger
2. rim - 1 size larger
3. tire width & rim - 1 size larger
4. tire width - 1 size smaller
Michelin has a toll free number to help you choose their tire as well: 1-888-871-4444
Bridgestone homepage has more information about the explanation for the tire number. I navigated to the exact URL, and save you some time. Anyway, it is fun to read up on tire company for their technology:
http://www.tiresafety.com/passenger.asp
Entry class car is normally doesn't equip with expansive tire, or rim for economy reason. It is up to individual driver to upgrade themselves. 16" and 17" rim for Civic is an option which cost $1.4k - $1.6k (w/ tax). If you buy yourself, then it may cost $1k - $1.2k. However, insurance may charge you a few hundred more for customizing the car. Reason due to too standout, and increase probability of car thief. One option is to buy original Honda Civic 17" rim, which may prevent the additional insurance cost. I guess.
Insurance doesn't charge more to upgrade wider tire, though
Feel free to correct with reason and justification.
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rim跟轮胎是匹配的，不能随便换
14寸的rim不能上15寸的轮胎，根本卡不上去。更不要说更大了，14寸的rim可以从17寸的轮胎中间穿过去了
Rim本身也有个宽度问题。175的rim不能上225的轮胎。这也应该很好理解吧。
比如说楼主现在 P185/65/14
就是说，宽185mm, 轮胎高0.65*185 = 120.25 mm (65% of width)
也就是说轮胎直径是14inch + 120.25*2mm
速度表盘是根据轮胎转一圈多少米矫正的。的确，楼主可以上185/55/14的轮胎。但是这样造成一圈转的距离小了，结果速度表盘就不准了。原来开100km/h的时候就是100, 现在可能得105,110才能达到实际的100km/h. 这样造成发动机转速比平时高，更多磨损，浪费汽油，而且车显示的历程数比实际开的多了。
反过来。。。。你可以开90的时候实际100....当然。。。。
理论上是可以用比楼主185的大一号的轮胎，比如195, 但是为了保证同样的轮胎高度（保证直径一样）就得用61.6666. 因为没有这个数字，就得用60, 实际直径就变小了
如果像楼主说的用185/70/14的，直接后果就是开的实际速度比显示的快
Feels我assume楼主不换rim. 要是真的连rim都换他也不会到这里来问问题了
14寸的rim不能上15寸的轮胎，根本卡不上去。更不要说更大了，14寸的rim可以从17寸的轮胎中间穿过去了
Rim本身也有个宽度问题。175的rim不能上225的轮胎。这也应该很好理解吧。
比如说楼主现在 P185/65/14
就是说，宽185mm, 轮胎高0.65*185 = 120.25 mm (65% of width)
也就是说轮胎直径是14inch + 120.25*2mm
速度表盘是根据轮胎转一圈多少米矫正的。的确，楼主可以上185/55/14的轮胎。但是这样造成一圈转的距离小了，结果速度表盘就不准了。原来开100km/h的时候就是100, 现在可能得105,110才能达到实际的100km/h. 这样造成发动机转速比平时高，更多磨损，浪费汽油，而且车显示的历程数比实际开的多了。
反过来。。。。你可以开90的时候实际100....当然。。。。
理论上是可以用比楼主185的大一号的轮胎，比如195, 但是为了保证同样的轮胎高度（保证直径一样）就得用61.6666. 因为没有这个数字，就得用60, 实际直径就变小了
如果像楼主说的用185/70/14的，直接后果就是开的实际速度比显示的快
Feels我assume楼主不换rim. 要是真的连rim都换他也不会到这里来问问题了
