Changes to your wheel’s specified diameter will change the accuracy of the speedometer, negatively impact your traction control and stability, and vehicles with anti-lock braking (ABS) may experience decreased effectiveness. Plus Sizing is a method for altering your tire size, width and aspect ratio without losing the overall diameter of your vehicle’s wheel specifications.
The main reasons people consider Plus Sizing is for improved function and aesthetic appeal. A shorter sidewall on the tire, coupled with a larger wheel, will make for better handling. However, these tires may be more susceptible to harsher road conditions and the likelihood of increased wear and tear increases. In addition, the wider surface area reduces traction on snow and offers no protection from hydroplaning at high speeds. Plus Sizing larger vehicles leads to longer stopping distances and higher than average wear on the suspension and brakes.