So I finally bought a flood replacement truck. 2005 Silverado with the 5.3. The truck is in good condition, but has somewhat higher mileage (147,000). The previous owner is running 265-70-17 tires, but I know the stock size is 245-70-17. Whats your thoughts on this? It seems the 5.3 V8 handles the larger size tires OK. Run them until needing replacements? Thanks.