What’s a Plus One, Plus Two or Plus Three conversion?
Also shown as “+1″, “+2″ or “+3″, these designations indicate switching from stock rims to rims of 1, 2 or 3 inch larger diameter. Vacant to a larger diameter rim while keeping overall tire height about the same can allow for a significantly wider, shorter tire which can have a dramatic effect on a car’s handling, ride and appearance. As shown in 2.B. above, potential replacements for a stock 205/60-15 can range from a prudent +1 combination like 225/50-16 to a rather outrageous 245/35-18 for a +3 conversion. Note that price increases are not linear; although 18 and even 19 inch tires and rims are available, they can cost several times what a 15 or 16 inch setup will run.
