i have a 96 1 ton chevy that i converted to 99 3/4 ton hubs to tuck 22" frl. rims in the front. the issue that i found was the adapters that i have (unknown make) hit my calipers, i used a 1/4 spacer to solve this issue.. here i am about 4 monthes of driving and i snapped 4 wheel studs on one side!! thinking old studs, i replced all with new, about 4 monthes later snapped again!! the studs are the same size as the 1 tons so i think the issue is in my spacer. my adapters are hub centric but because i needed the spacer it now relies on the studs only. as far as i know all adapters are hubcentric but the pics of yours look like they are bevilled for the hub lugnuts? the only thing i can think of doing to fix this is to drill my hubs for 5/8 studs and drill my adapters to accept an acorn type nut. do you have any suggestions? thank you in advance.... chris. by the way, Merry Christmas to everyone!!!!