LPO, tires, 18 inch, P235/50R18

Years 2015 Models 1 Factory citations 1

Also documented for Cadillac Chevrolet GMC

Documented applications

LaCrosse — Epsilon II, 2nd gen (2010–2016)

2015 Factory-verified

2015: 1SB, 1SL FWD, 1SP FWD: O (dealer-installed); with SE4 or SE7

GM factory document — 2015 buick lacrosse fleet order guide wayback, p.3.

This page aggregates every documented appearance of XAS in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.