Yes, you can certainly change your stock tires on your Ride1UP Electric Bike once you receive it!
Step 1: Confirm your model and tire specs from our website
Step 2: Research your 3rd party tire options and confirm they are compatible with your current rims
To confirm compatibility, you can match the specs written on your current tires, or remove your stock tires and measure the Outer Rim Width (A) and Inner Rim Width (B) of your rims.
500 Series - A=31.05mm B=23.8mm
700 Series - A=39.86mm B=34.68mm
LMT'D/Core-5 - A=25mm B=19mm
Step 3: Share your snazzy new aftermarket parts, pictures and compatibility with your riding community on the Facebook Ride1UP Owner's Group
Check the handy chart from https://www.wtb.com/pages/tire-rim-fit-chart# for more information on tire swaps and rim specs