Head-to-head · Best Portable Tire Inflators

Milwaukee M18 Compact vs Viair 77P

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Milwaukee M18 Compact comes out ahead by a narrow margin (4.7 vs 4.5). The gap is mostly about contractors and pros already in M18 ecosystem — read the strengths below before deciding.

Higher ratedRanked #4 in Best Portable Tire Inflators

Milwaukee M18 Compact

4.7

$189

The Milwaukee M18 is the pro pick — Milwaukee's tool-ecosystem inflator with class-leading speed.

Strengths

— Best inflation speed in editorial testing
— M18 tool ecosystem compatibility
— Heavy-duty pro build

Watch-outs

— M18 battery sold separately
— Premium pricing
— Bulkier than car-only units

$189 · Check Price on Amazon Full review →

Ranked #5 in Best Portable Tire Inflators

Viair 77P

4.5

$60

The Viair 77P is the budget Viair pick — entry-level 12V inflator for occasional use.

Strengths

— Cheaper Viair option
— 12V cigarette plug
— Analog gauge + 8-ft hose

Watch-outs

— Slower than 88P
— Analog gauge
— 12V only — no battery

$60 · Check Price on Amazon Full review →

How they stack up

Milwaukee M18 Compact

Pro tool. M18 ecosystem. Battery separate.

Viair 77P

Cheapest Viair. 12V cord only. Compact.

Specs side-by-side

Spec	Milwaukee M18 Compact	Viair 77P
Power	M18 battery	12V plug
Speed	Class-leading	—
Brand	Milwaukee	Viair
Build	Pro-grade	—
Hose	—	8 ft
Price	—	$60

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