Which is better for overpronation?

Both are stability shoes. The Kayano 33 uses FluidSupport to guide the stride dynamically, while the Addiction GTS 15 uses GuideRails plus a firmer, one-piece platform. Runners who want firm control tend to prefer the Addiction; those who want soft guidance prefer the Kayano.

Which is better if I wear orthotics?

The Addiction GTS 15. Its straighter last, roomy forefoot and firm one-piece outsole are built for orthotics and pedorthic needs. The Kayano's removable insole is not confirmed, so check before relying on it.

The Kayano 33, at about 298 g versus about 346 g for the Addiction GTS 15. The gap is noticeable over long distances.

The Addiction's firm EVA and limited-flex outsole tend to hold shape longer for heavy runners. The Kayano's softer foams feel plusher but can pack down sooner with high mileage.

Is the Kayano worth stepping up to over the Addiction?

If you want a softer, lighter daily trainer and don't use orthotics, yes. If you need a firm platform or a roomy orthotic-friendly fit, the Addiction is the better match.

Do both come in wide sizes?

Yes. Both reach 4E, the widest common width. The Addiction's forefoot is roomier even at the same width because of its straighter last.

Asics GEL-Kayano 33 vs Brooks Addiction GTS 15

The Kayano 33 is the more modern, more cushioned stability trainer, with a soft FF Blast Max/Plus midsole and a lighter build. The Addiction GTS 15 is the specialist: a firm, roomy, straighter shoe built for orthotics and high-volume feet. Reviewers rate the Kayano well over hundreds of ratings; the Addiction has far fewer ratings but a higher average. Pick the Kayano for daily cushioned miles; pick the Addiction if you wear orthotics or need a wide, firm platform.

Choose the Asics Gel-Kayano 33 if you want a lighter, max-cushion stability shoe for everyday road miles and overpronation.
Choose the Brooks Addiction GTS 15 if you run with orthotics or need a firm, roomy, straight-lasted shoe for high-volume feet.

Prices

Asics GEL-Kayano 33: $129.00 at eBay (checked today)
Brooks Addiction GTS 15: $86.00 at Athletekits - B (checked today)
Difference: the Brooks Addiction GTS 15 is $43.00 cheaper than the Asics GEL-Kayano 33 today

	Asics GEL-Kayano 33	Brooks Addiction GTS 15
Cushioning	Maximum, soft FF Blast Max and FF Blast Plus foam	Firm, compression-molded EVA with BioMoGo DNA
Weight	About 298 g / 10.5 oz	About 346 g / 12.2 oz
Heel-to-toe drop	8 mm	12 mm
Support system	FluidSupport guides the stride dynamically	GuideRails keep excess motion in check
Fit and last	Standard fit, widest in 4E	Straighter last with a roomy forefoot, up to 4E
Orthotics use	Removable insole not confirmed	Built for orthotics and pedorthic needs
Outsole flex	Flexes with the foot for smooth transitions	One-piece outsole limits flex
Owner feedback	4/5 from 331 ratings	4.6/5 from 18 ratings

Spec	Asics GEL-Kayano 33	Brooks Addiction GTS 15
Weight	298g	12.2 oz / 345.9g (men's)
Support	Stability	Structured support
Cushion	Maximum	Balanced
Surface	Road	—
Stack height	40-32mm	—
Width	4E widest - EXTRA WIDE	—
Pronation	Neutral, Overpronation	—
Upper material	Engineered mesh	—
Midsole foams	FF BLAST™ MAX, FF BLAST™ PLUS	—
Size (US)	12.5	—
Series	Asics Gel-Kayano	—
Color	Black	—

Spec	Asics GEL-Kayano 33	Brooks Addiction GTS 15
Age Group	Adult	—
Lining	Polyester	—
Gender	Male	—
Type of Running Shoe	Road	—
Midsole	Foam	—
Insole	Ortholite	—
Drop	8 mm	—
Type	stability	—
Removable insole	not confirmed by the sources I checked	—
Style	athletic	—

Asics GEL-Kayano 33 vs Brooks Addiction GTS 15

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Asics GEL-Kayano 33

Asics GEL-Kayano 33 vs Brooks Addiction GTS 15

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Asics GEL-Kayano 33

Brooks Addiction GTS 15

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Asics GEL-Kayano 33

Brooks Addiction GTS 15

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Asics GEL-Kayano 33

Brooks Addiction GTS 15

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Asics GEL-Kayano 33

Asics GEL-Kayano 33

Brooks Addiction GTS 15

What separates them

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Prices at every store

Asics GEL-Kayano 33

Brooks Addiction GTS 15

Specs compared

What reviewers say

Asics GEL-Kayano 33

Brooks Addiction GTS 15

Questions and answers

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