What should be considered in choosing a wheel and tire package?
Some replace the factory wheels to customize their car or to facilitate plus sizing, while others purchase aftermarket wheels to use on the track. Whatever the reason, a wheel and tire package selected must fit within the wheel well without rubbing on the suspension or fender. On street cars, it should have an overall diameter that is within 3% of the factory specification. The 3% variation is recommended for street cars in order to maintain accurate speed data going into the computer, thus keeping odometer and speedometer changes negligible. While a 3% diameter increase or reduction in tire diameter may sound very limiting, in most cases it allows approximately a 3/4″ diameter change. Assuming 24.00″ (609.6mm) as the factory specification for overall diameter, any of the following tire sizes may be appropriate:+———–+——————-+ | TIRE SIZE | DIAMETER | +———–+——————-+ | 195/55-15 | 23.44in (595.5mm) | | 205/40-17 | 23.46in (595.8mm) | | 215/50-15 | 23