Join Date: Mar 2017
Vehicle: '01 SLK320 Lazulithe Blue, '00 SLK230 Bahama Blue (needs interior parts)
Other Toys: Too many others. See web page.
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Keep in mind that the proper inflation for a tire depends on the tire characteristics, rim, suspension geometry, inflation, and driving habits. That said inner AND outer generally means either too narrow a tire for the rim or underinflation or both.
To determine proper inflation for a street car I usually take the weight on each end, multiply by .625, and divide by the load rating of the tire. Then multiply by the inflation pressure at the load. For more spirited driving I use .75. For racing, 1.0 and a bit of decambering from stock. Can also tell by the amount of roll visible on the sidewall of the front tires.
For wheels on a street car I look for a rim that is the same width and the tread. For racing, the same width as the section. e.g. for really hard driving or racing and a 245 tire I'd want a 9.5-10" rim.
Car will tell you a lot about what is going on if you listen.
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