Tires rubbing
If the tires aren't all that big, then you're probably right about the offset being incorrect. Especially if it's happening on both the front and rear wheels. It would be helpful to post the tire sizes, they should be right on the side of the tire. It would also be helpful to know more about your suspension and brakes. If you have "cheap wheels from jegs" then you probably have the larger 5x4.5" bolt pattern, do you know if you have the 73+ mopar disk brakes up front? And what rear axle you have? Those things change the track width of the car, so, it changes the wheel offset/backspace you need to keep the tires from rubbing.
Offset and backspace are related, and backspace is easily measured. This picture explains all the wheel specifications you need to know...
To get the backspace, if you take a wheel off the car and turn it over so the side that faces the car is up, all you have to do is measure from the outside lip of the rim down to the wheel mounting surface. So if you lay a straight edge across the rim (not the tire) and measure like this you get the backspace (5" in this case).
It may be even easier than that though, because most new rims have the information stamped or cast right into them. Same wheel as above, you can see it's labeled as a 17x9, and the box after "ET" has a 0 in it (it's a zero, trust me). So, a 17x9" wheel with a 0mm offset, which just happens to be a 5" backspace.
As far as the tire shop goes, they SHOULD be able to tell you that. But they may also tell you that you need to buy new tires and rims, since that's their business. And, if your tires are damaged from the rubbing interference, they may be kinda pushy about replacing them because it's a safety issue.
If you can get a little more information and post it here I can probably answer most of your questions. That way you at least have an idea what you're in for, before some tire shop tries to pressure you into a sale.
If the tires aren't all that big, then you're probably right about the offset being incorrect. Especially if it's happening on both the front and rear wheels. It would be helpful to post the tire sizes, they should be right on the side of the tire. It would also be helpful to know more about your suspension and brakes. If you have "cheap wheels from jegs" then you probably have the larger 5x4.5" bolt pattern, do you know if you have the 73+ mopar disk brakes up front? And what rear axle you have? Those things change the track width of the car, so, it changes the wheel offset/backspace you need to keep the tires from rubbing.
Offset and backspace are related, and backspace is easily measured. This picture explains all the wheel specifications you need to know...
To get the backspace, if you take a wheel off the car and turn it over so the side that faces the car is up, all you have to do is measure from the outside lip of the rim down to the wheel mounting surface. So if you lay a straight edge across the rim (not the tire) and measure like this you get the backspace (5" in this case).
It may be even easier than that though, because most new rims have the information stamped or cast right into them. Same wheel as above, you can see it's labeled as a 17x9, and the box after "ET" has a 0 in it (it's a zero, trust me). So, a 17x9" wheel with a 0mm offset, which just happens to be a 5" backspace.
As far as the tire shop goes, they SHOULD be able to tell you that. But they may also tell you that you need to buy new tires and rims, since that's their business. And, if your tires are damaged from the rubbing interference, they may be kinda pushy about replacing them because it's a safety issue.
If you can get a little more information and post it here I can probably answer most of your questions. That way you at least have an idea what you're in for, before some tire shop tries to pressure you into a sale.
