Heavier wheels can increase braking distances too. I moved up to 17" rims from stock 15" rims on my '96 MX-6 while keeping the same overall diameter. The 17s were 9 pounds lighter than the 15s. Handling improved, mileage stayed to same, and braking was better with the bigger tread. I see a lot of people who did not research wheel weights nor try to match overall diameter and end up with cv joints going bad quickly, decreased performance, etc...
2012 Lava Red Mustang Coupe V6 with stone interior
Auto,2.73,BAMA Tunes 93H,Axle Exchange Aluminum DS,Pypes M80 mufflers,Airaid CAI,
Shelby GT500 racing stripes, Side window louvers,Side scoops,Polk Audio MM571 speakers
Shelby GT500 Steering wheel, Maxxim Maze wheels (18 lbs), BBK Throttle Body, Stillen Chin Spoiler, 10" Amplified Bazooka Subwoofer, Illuminated Door Sills, GT500 rear diffuser, Roush Rocker Panel Splitters, Splash Guards, Continental Extreme DWS tires