Had a couple of these wheels crack with minor cracks on backside of rim. Have welded and are holding pressure.1 rim is new. Have never been able to get much more than 5k out of these tires. 1 new tire, 1 good tire, 2 tires need replacing. Got tired of cracking rims and buying tires. went back to 16 " run flats with different wheels. will take 100.00 for lot! Last rim cost me 230.00! wmwade@3bubbas.com