Slime 40047 Rugged Digital
#5 in 12 V plug-inFull review
For car owners who want a cheap set-and-forget pump for topping up tires. Larger tires need a faster compressor.
Amazon $35.98$35.98
The Slime 40047 Rugged Digital is the better tire inflator overall, rated 3.1 to 2.6. The Slime 40047 Rugged Digital leads on value and features. The VIAIR 85P wins on airflow. The Slime 40047 Rugged Digital costs $33.71 less ($35.98 vs $69.69).
VIAIR 85P
#7 in 12 V plug-inFull review
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 $69.69$69.69
Prices 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.
Which should you buy?
- Choose the Slime 40047 Rugged Digital for value ($35.98 vs $69.69) and features (auto shutoff vs runs 20 min at a time, 60 PSI max; no auto shutoff).
- Choose the VIAIR 85P for airflow (50.1 L/min (maker) vs 26.9 L/min (maker)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 12 V plug-in tire inflator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Slime 40047 Rugged Digital | VIAIR 85P |
|---|---|---|
| Overall rating | 3.1/5 | 2.6/5 |
| Value 35% | 73 $35.98 | 17 $69.69 |
| Airflow 30% | 17 26.9 L/min (maker) | 75 50.1 L/min (maker) |
| Features 20% | 70 auto shutoff | 18 runs 20 min at a time, 60 PSI max; no auto shutoff |
| Warranty 15% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Slime 40047 Rugged Digital | VIAIR 85P | |
|---|---|---|
| Inflating | ||
| Max pressure | - | 60 PSI |
| Airflow (maker) | 26.9 L/min | 50.1 L/min |
| Auto shutoff | Yes | No |
| Duty cycle | - | 20 min on |
| Noise | - | 77 dB |
| Power | ||
| Power | 12 V socket | 12 V socket |
| Power bank | No | No |
| Power cord | 10 ft | 10 ft |
| Build | ||
| Air hose | 24 in | 36 in |
| Light | Yes | Yes |
| Dimensions | - | 9.1 x 3.1 x 5.6 in |
| Weight | - | 4.3 lb |
| Warranty | 1 year | 1 year |