For M18 owners with trucks or several vehicles who want the fastest cordless fill and don’t mind the price.
Amazon $166.85The Milwaukee M18 Inflator 2848-20 rates 3.6 among cordless tire inflators; the VIAIR 85P rates 2.6 among 12 V plug-in ones. The VIAIR 85P costs $97.16 less ($69.69 vs $166.85).

For drivers of cars and small SUVs who want a durable, fast 12 V pump from an air-compressor specialist and don’t mind watching the gauge.
Amazon $69.69Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different type classes (cordless and 12 V plug-in), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Milwaukee M18 Inflator 2848-20 | VIAIR 85P |
|---|---|---|
| Overall rating | 3.6/5 | 2.6/5 |
| Value 35% | 9 $166.85 without battery | 17 $69.69 |
| Airflow 30% | 83 39.9 L/min (maker) | 75 50.1 L/min (maker) |
| Features 20% | 88 auto shutoff, runs 20 min at a time, 150 PSI max | 18 runs 20 min at a time, 60 PSI max; no auto shutoff |
| Warranty 15% | 100 5-year warranty | 0 1-year warranty |
Specifications
| Milwaukee M18 Inflator 2848-20 | VIAIR 85P | |
|---|---|---|
| Inflating | ||
| Max pressure | 150 PSI | 60 PSI |
| Airflow (maker) | 39.9 L/min | 50.1 L/min |
| Auto shutoff | Yes | No |
| Duty cycle | 20 min on | 20 min on |
| Noise | - | 77 dB |
| Power | ||
| Power | Milwaukee M18 battery (sold separately) | 12 V socket |
| Power bank | - | No |
| Power cord | - | 10 ft |
| Build | ||
| Air hose | 36 in | 36 in |
| Light | - | Yes |
| Dimensions | 13.8 x 6.4 x 7.8 in | 9.1 x 3.1 x 5.6 in |
| Weight | 7 lb | 4.3 lb |
| Warranty | 5 years | 1 year |