If the dealer gives you any grief about larger than OE tires (within reason) then find another dealer. I had a dealer look at my truck and told me they won't even try to diagnose my axle seal leak under warranty because I had a 2" leveling kit on it. The next dealer gladly took care of the issue, under warranty, without batting an eye. Every dealer is different in their acceptance of aftermarket parts.
2018 Canyon SLE CCSB 3.6L
- King 2.5 coilovers | Icon 2.0 rear shocks | 1" AutoSprings AAL | 1" rear lift blocks | RC 1.25" body lift | DV8 887 17×9 wheels | Falken Wildpeak A/T3W LT285/70/17 | Custom bed rack |Tepui Baja Kukenam RTT | DV8 rear bumper | DV8 front bumper | Smittybilt X20 10k winch | Morimoto HID | Tyger step bars | LED bed lighting | Midland MXT115 GMRS | Nilight 60w LED 4" pods | RotopaX, Maxsa traction mats and Recovery Gear | DV8 + ZR2 skids |