i was just told that wheel spacers will cause a lot of stress on the bearings. i'm still riding stocks...is it really that bad of a mod???

 

Usually the spacers are used with taller and wider tires.

 

bout to install a rubicon express 2.5 lift....still debating to go 33 or 35s....will the spacers do less damage with these?

 

Just makes some room to steer!

You could fit 35s on 2.5. That's what I'm at as well as many others.

 

thanks for the info...will i have to do any adjustments to the differentials or reprogramming if i go with 35s?

 

Yeah you'll need something like an AEV Procal or other similar device to reprogram in the different size tire....

 

To run taller/wider tires, you generally want to run less backspace (move the rims out). Whether you buy new rims with less backspace, or add spacers to run less effective backspace, the 'stress' on parts should be about the same. The wheel bearings aren't really going to know the difference, right?

If you are asking 'Are wheel spacers safe?', try this thread:
https://www.jk-forum.com/forums/modi...s-safe-317080/

If you are asking specifically about RC spacers vs any other mfg, try this one:
https://www.jk-forum.com/forums/modi...safety-130315/

For gearing, there are about a bajillion threads to read through for opinions. Depends on which engine you have, and which transmission, and where you live, and how you drive, and what your expectations are, and ...

Programming, yes you will want to. Aev procal and superchips flashcal are the most popular programers. If you want a little extra hp as well as the programming, superchips flashpaq and diablosport intune I think are the most popular tuners.

 

You did remove ALL lock washers on all studs, correct?

 

Yeah, it wouldn't of sat flush if I didn't.

 

Thanks I'll look into it!