Here we go again. Any suspension mod will not void your warranty per se. It can however trigger and justify Chrysler to deny warranty service on an issue that can be attributed to modification in this case the spacers.
The likelihood of denial of a warranty claim are proportional to magnitude of the mod. Spacers are a relatively moderated modification so it is likely they will may be ignored. All of this is highly dependent on how the dealer files the warranty claim.
You only have to worry about a "bad" dealer voiding your full warranty if the mod is, in their judgment, typical evidence of off-roading. As others have said here, it would be quite a stretch for spacers to be considered such.
An argument could be made that the 1,1/2"wheel spacers on my jeep contributed to the premature failure of the axle seal, it has failed three times.
Each time i bring it in for warranty I expect to hear about how the spacers contribute to this, each time I am handed the keys back and not a word said except "your jeep is ready sir"
A forum community dedicated to Jeep Wrangler owners and enthusiasts. Come join the discussion about reviews, performance, trail riding, gear, suspension, tires, classifieds, troubleshooting, maintenance, for all JL, JT, JK, TJ, YJ, and CJ models!