Based on the OP's obvious unfamiliarity with the different options and their advantages and/or disadvantages, I would say 19 inch wheels are the best option for this particular situation. Driving scared isnt worth driving at all in my opinion.
21" DPE Super Concave, Meisterschaft GTC w/LXR midpipes, BMC Filters, Charcoal delete, H&R Springs, IND cosmetic pkg, M-Performance spoiler, Wrapped Roof, Hardwired V1, Coded
2013 X6 50i Msport
2012 Jeep Wrangler Unlimited