I finally landed on 607 with Procal / Squach tires. while vehicle speed remains constant the GPS bounces from from 1 to 0 mph difference. thats close enough for me...for now. I have not tested at interstate speeds yet.
From what Ive read different manufactures call their tire one size but...
Id venture to say your not too far off, heck I was 487 last night, willing to bet it is built today, and the system hasnt updated yet....all my stuff kinda happened within about 6 hours or so
4-17 Blend, Mods popped early this morning, tear tag posted about 10 am. 487/916. No Shipping info yet. I assume it got built overnight, because I checked it about midnight last night.