I run 45psi - my SV210 is probably around 4K# or less. When I checked them the first time they all had 45 from the dealer so that is what I run. I understand that the biggest thing is to make sure they are equal. If you have more in one that the other (on the same side) that is bad. Of course you don't want to go more than what the sidewall indicates either. 110 seems very high to me - most trucks don't have that much pressure.
2012 Puma 30FQSS
2005 Ford F-250 Super Crew 6.0 PSD
2003 Honda Odyssey
1 wife, 1 son, & 1 cat
Asst. Scoutmaster (BSA)