I just got a Stock 2000 Jeep Grand Cherokee and was wondering how big of a tire I could go without putting a lift on? I would like to be able to turn without rubbing the tires aswell.

 

235/75r15 for better prices, selection, and nearly the same size as 30s

 

Almost as big as 30s? I thought stock tires were 16s? Sorry if you have to go into depth l, Im new at this.

 

He may have been thinking XJ instead of WJ.

There two 16" sizes offered for your GC. 225/75-16(29.3") and 245/70-16(29.5"). From what little I've read about it those are the largest sizes you can go with. You may want to jump over to the Modified Grand Cherokee Tech forum and ask.

https://www.wheel-size.com/size/jeep...cherokee/2000/

https://tiresize.com/chart/

 

FYI, a Grand Cherokee is a different thing from a Cherokee. There's a section for them over here.