Subaru Outback owners who tow a trailer or load up for a camping trip put more stress on a tire than the factory all-season was ever designed for, and that shows up fast on loose gravel or an icy grade. The Yokohama Geolandar A/T4 spans every Outback generation from 1995 to the current Wilderness trim, with a Standard fitment matched to the stock wheel and an Aggressive fitment for a lifted wheel-and-tire package. The oldest generation (1995-2009) uses Yokohama's LT-rated 15" sizes in both the Standard and Aggressive slots, and that stiffer-sidewall carcass is only worth the tradeoff if the vehicle is actually carrying real load, not running a daily commute. Wheel diameter climbs from 15" to 18" across the six generations covered here, with the newest Wilderness-era cars running the biggest factory setup, so this listing's Model dropdown keys off generation and wheel size together rather than a single part number. Flat 4 Offroad in Calgary handles Canada-wide shipping on every size in this line.