ASICS GT-4000 4 vs ASICS GT-2000 15

Among ASICS' road stability shoes, the GT-4000 4 is the one the brand describes as one of its most stable, aimed at overpronators who want more support and cushioning. Where the GT-2000 15 and GT-1000 15 rely on the geometry-based 3D Guidance System, the GT-4000 4 uses LiteTruss, a midsole technology that ASICS says improves stability and balance.

Cushioning comes from FF Blast foam with PureGEL, and ASICS claims the midsole delivers a more energised toe-off. ASICS rates the cushioning as regular rather than maximum, and the shoe has been reviewed by the American Podiatric Medical Association, which found it to promote good foot health. ASICS lists it at 307 g in a men's US 9 (UK 8.5), with an 8 mm drop. Standard and wide fittings are available.

Specs and features from asics.com and our own spec data. A factual overview, not a review.

Replacing the GT-2000 14, the GT-2000 15 is ASICS' mid-range stability trainer, which the brand describes as a versatile, lightweight daily shoe for a range of distances. ASICS positions it as the lighter, more nimble alternative to the Gel-Kayano 33, and it sits above the cheaper GT-1000 15.

Guidance comes from the 3D Guidance System, which uses the midsole's geometry to guide the foot from landing through toe-off, in place of the Kayano's FluidSupport. Updated FF Blast Max foam is paired with PureGEL, and a forefoot trampoline pod borrowed from the Blast series is a feature the Kayano lacks. A new engineered woven upper completes the update, which ASICS says is lighter and taller than before. It weighs 252 g in a men's US 9 (UK 8.5), with an 8 mm drop, and comes in standard, wide and extra-wide fittings plus a GORE-TEX version.

Specs and features from asics.com and our own spec data. A factual overview, not a review.