Scion Wheel Bolt Patterns (tC, FR-S, xB)
A wheel bolt pattern is one of the first measurements that decides whether a replacement or aftermarket wheel will fit safely. Scion enthusiasts looking at tC, FR-S, and xB models often find that a wheel can look correct in photos yet mount improperly because the lug circle differs by model generation or platform. Understanding how the bolt circle is measured, along with related wheel fitment values such as center bore and offset, prevents an expensive ordering mistake. The topic matters for anyone comparing original equipment sizes, rotating multiple sets, or shopping for used wheels across Scion’s compact lineup.
Essential answer
The Scion brand used different platforms, so the wheel bolt pattern is not the same for every tC, FR-S, and xB. The tC was built around a compact front-wheel-drive layout and generally shared a five-lug pattern with other small Toyota-based passenger cars of its period. The rear-wheel-drive FR-S, developed with Subaru, sits on a different hub layout that reflects its sports coupe architecture. That means a wheel set from one model cannot be assumed to fit another, even when the overall diameter looks similar in a listing.
The xB presents a different situation depending on model generation. The first-generation boxy wagon came from a smaller platform, while the second generation moved to a larger architecture with its own wheel hub and brake packaging. Within any of these vehicles, the exact trim level or original wheel diameter does not change the bolt circle, but it may affect width, offset, and tire clearance. Before buying wheels, the useful first step is to identify the model year and platform rather than relying only on the Scion badge.