Any experience with wheel adapters? Need help with sizing...

I run 1" adapters to mount 17x8 bullit wheels to my sbp swinger. I haven't had any issues with my 340 4.10 gears its a high 12 second car. Like a few others have said the off-road guys run run adapters and spacers all the time with high gears and 35" plus tires with a lot more stress and no issues.