03-17-2014, 06:09 PM
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#61 (permalink)
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the speedo/odo read wheel rpm. If you make the tires larger, the car will go faster for a given wheel rpm, but the speedo won't know about it so it reads less than actual. They are calibrated for a certain tire size.
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03-17-2014, 06:25 PM
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#62 (permalink)
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According to 1010tires the speed variance will be 4.61% more with bigger wheels, the speedometer will read 65.14MPH with 15'' versus 62.14MPH with 13'' wheels, that is read more than actual. honestly I am confused here.
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03-17-2014, 06:35 PM
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#63 (permalink)
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there are several figures, tire width/aspect ratio and diameter. they all play into revs/mile.
I put in my 195/60r15 and compared it to taller (via 70% of treadwidth) 195/70/r15 it gave me 62.14mph stock vs 66.08 mph for the larger tire. which seems about right.
What three values did you use for each tire?
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03-17-2014, 06:50 PM
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#64 (permalink)
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175/70R13 stock vs 185/60R15 current.
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03-17-2014, 07:01 PM
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#65 (permalink)
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yah, the site is goofy, they compute the wheel speed @100kph for the stock tire, then use that to compare to the new tire. But at 62.14 mph indicated, you will actually be going 65.14mph with the 185/60r15s. If you want even taller "gearing" then go with a 185/70r15, though the extra width probably isn't going to be helpful for mpg.
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03-17-2014, 07:11 PM
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#66 (permalink)
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I am happy with the current tires, great response at take off. The main goal at the moment is to increase the FE, I am still in the learning process.
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03-17-2014, 07:24 PM
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#67 (permalink)
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Quote:
Originally Posted by Honda
great response at take off. The main goal at the moment is to increase the FE
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Generally speaking, these are conflicting goals. |
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The Following User Says Thank You to P-hack For This Useful Post:
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03-17-2014, 07:32 PM
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#68 (permalink)
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Quote:
Originally Posted by P-hack
Generally speaking, these are conflicting goals.
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Sorry I didn't explain well. I am not talking about speed, just want to say that they don't put much strain on the transaxle/clutch as taller wheels might do. I try to do modifications that will not harm other components in the long run. |
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03-17-2014, 08:34 PM
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#69 (permalink)
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Well, I don't want to propagate the notion that taller gearing equates to premature failure. Do you have specific concerns, and data behind them? There's a lot of variables in play here, such as lower rpm, which is less stress on a piston engine. I've never had a problem with gearing up, driveability or maintenance.
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03-17-2014, 08:47 PM
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#70 (permalink)
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The specific concern I have is wearing the clutch faster, I have no data or evidence to prove that, just my opinion.
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