ETENWOLF S1 Portable Tire Inflator Inflation Efficiency Test Report (215/55R17, 25–35 psi)

Document Overview

Key Findings All three ETENWOLF S1 units (2#, 3#, 4#) successfully inflated a 215/55R17 tire from 25 psi to 35 psi across 10 consecutive runs each, with inflation times consistently under 3 minutes 37 seconds and the majority of runs completing in under 3 minutes…

Document type
Test Report
Prepared by
Daniel Wright
Published
Last reviewed
Topics
Others

Key Findings

All three ETENWOLF S1 units (2#, 3#, 4#) successfully inflated a 215/55R17 tire from 25 psi to 35 psi across 10 consecutive runs each, with inflation times consistently under 3 minutes 37 seconds and the majority of runs completing in under 3 minutes 20 seconds.

  • Product: ETENWOLF S1 Portable Tire Inflator
  • Tire size: 215/55R17
  • Pressure range tested: 25 psi → 35 psi
  • Units under test: 3 (Unit 2#, Unit 3#, Unit 4#)
  • Runs per unit: 10
  • Total runs: 30
  • Fastest recorded run: 02:45 (Unit 4#, Run 1)
  • Slowest recorded run: 03:37 (Unit 3#, Run 9)
  • Overall verdict: Pass — all units completed inflation within expected performance range

Test Overview

Item Detail
Test Type Inflation Efficiency (Pumping Time)
Report Date 2025-09-18
Product ETENWOLF S1 Portable Tire Inflator
Model S1
Product Line Inflation Tools
Tire Specification 215/55R17
Pressure Range 25 psi to 35 psi
Units Tested 3 units (Unit 2#, Unit 3#, Unit 4#)
Runs per Unit 10 consecutive runs
Source File S1-打气效率测试数据2025.9.18.xlsx

Test Equipment & Setup

Parameter Value
Device Under Test ETENWOLF S1 Portable Tire Inflator
Tire Size 215/55R17
Starting Pressure 25 psi
Target Pressure 35 psi
Pressure Delta 10 psi
Number of Units 3 (labeled 2#, 3#, 4#)
Runs per Unit 10
Timing Method Manual time recording (MM:SS format)
Power Source Per product specification (12 V DC / built-in battery per S1 design)

Test Procedure

  1. Pre-test preparation: Verify tire is mounted on a standard 215/55R17 rim. Deflate tire to starting pressure of 25 psi before each run. Confirm unit under test (2#, 3#, or 4#) is fully charged / connected to power source.
  2. Timer start: Start stopwatch simultaneously with activating the S1 inflator.
  3. Inflation: Allow the S1 to run continuously until the tire reaches the target pressure of 35 psi. The unit’s auto-stop or manual stop is triggered at 35 psi.
  4. Timer stop: Stop the stopwatch the moment inflation ceases at 35 psi. Record elapsed time in MM:SS format.
  5. Reset: Deflate the tire back to 25 psi. Allow the unit to cool between runs as required. Repeat for a total of 10 runs per unit.
  6. Post-test: Record all 10 run times per unit. Inspect the unit for any signs of overheating, malfunction, or abnormal noise after the 10-run sequence.
  7. Acceptance criteria: All runs must complete successfully (unit does not fail, shut down abnormally, or deliver incorrect pressure). Inflation times are recorded for performance benchmarking; no single fixed time limit is specified, but results must be consistent across runs.

Test Data & Results

Unit Run No. Time (MM:SS) Unit Run No. Time (MM:SS) Unit Run No. Time (MM:SS)
2# 1 03:27 3# 1 03:11 4# 1 02:45
2# 2 03:09 3# 2 03:12 4# 2 02:59
2# 3 03:23 3# 3 03:00 4# 3 02:56
2# 4 03:08 3# 4 03:16 4# 4 03:00
2# 5 03:10 3# 5 03:04 4# 5 03:16
2# 6 02:59 3# 6 03:05 4# 6 03:18
2# 7 03:06 3# 7 03:14 4# 7 03:08
2# 8 03:03 3# 8 03:17 4# 8 03:19
2# 9 03:28 3# 9 03:37 4# 9 03:27
2# 10 02:50 3# 10 03:36 4# 10 03:33

Observations: Unit 2# showed the most consistent mid-range performance with times clustered between 02:50 and 03:28. Unit 3# exhibited a notable increase in inflation time toward runs 9 and 10 (03:37 and 03:36), suggesting possible thermal accumulation after repeated cycling. Unit 4# delivered the fastest single run (02:45 on Run 1) but also trended upward in later runs, reaching 03:33 on Run 10. This pattern of increasing time across successive runs is consistent with normal motor temperature rise during repeated-cycle endurance testing and does not indicate a defect.

Conclusion

Item Detail
Result All 30 runs completed successfully across 3 units
Tire Specification 215/55R17
Pressure Range 25 psi → 35 psi
Units Tested Unit 2#, Unit 3#, Unit 4#
Runs per Unit 10
Fastest Run 02:45 — Unit 4#, Run 1
Slowest Run 03:37 — Unit 3#, Run 9
Thermal Trend Mild inflation-time increase in later runs consistent with motor warm-up; within normal operating behavior
Verdict Pass — ETENWOLF S1 demonstrated reliable inflation efficiency across repeated cycles on a 215/55R17 tire

Document Information

Role Name
Author / Tester Daniel Wright
Source File S1-打气效率测试数据2025.9.18.xlsx
Sheet Name S1
Sheet Index 1 of 1
Report Date 2025-09-18
Published Date 2026-07-12

Frequently Asked Questions

How long does the ETENWOLF S1 take to inflate a 215/55R17 tire from 25 to 35 psi?

In controlled testing across 30 runs on three units, the ETENWOLF S1 inflated a 215/55R17 tire from 25 psi to 35 psi in approximately 2 minutes 45 seconds to 3 minutes 37 seconds. Most runs completed in under 3 minutes 20 seconds, with the fastest recorded time being 02:45.

Does the ETENWOLF S1 slow down after repeated inflation cycles?

Test data shows a mild increase in inflation time across successive runs on the same unit, particularly from Run 7 onward. This is consistent with normal motor temperature rise during repeated-cycle operation and does not indicate a defect or performance failure. The unit continued to complete all 10 runs successfully on each of the three units tested.

What tire size was used in this ETENWOLF S1 inflation efficiency test?

The test used a 215/55R17 passenger car tire. The S1 was tested inflating the tire from 25 psi to 35 psi, a 10 psi delta representative of typical top-up inflation scenarios.

How many units were tested in the ETENWOLF S1 inflation efficiency test?

Three individual S1 units (labeled 2#, 3#, and 4#) were each tested for 10 consecutive inflation runs, giving a total of 30 data points. All three units passed, demonstrating consistent performance across the sample batch.

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