How the tests were carried out :

- Step 1 :
Installation of the kits into 2 tires 'tubeless" 195/70 R15 for LCV RENAULT "Maxity", both showing a worn and thin tread. After inflation at a pressure of 4.00 Bars (60 psi) they have been fitted on the front wheels of the LCV.

- Step 2 :
Test of the perforation resistance to a dynamic penetration of headless steel nails sizing 60 mm (2 3/8 of inch) long with a diameter of 5 mm (1/5 of inch).

- Step 3 :
Driven distance after nails penetration : about 1,6 km (1 mile). Driving speed : about 70 km/h (45 miles/h). Then the wheels have been removed from the LCV and stored for 72 hours with the nails left completely stuck in the treads.

- Step 4 :
72 hours later, checking the pressure and visual inspection of the tires (inside and outside).

Checking the tires : :

1) Pressure : UNCHANGED !

2) Visual inspection of the inside of the tires and the perforation-resistant membrane :
Impact of the nails visible on its external side, i.e. the side in contact with the layer of lubricated micro balls but NO PERFORATION which accounts for the unchanged pressure of the tire in spite of the severe perforation of the tread : the internal height of the nails emerging from the tread inside the tires are respectively of 43 mm (1 11/16 of inch) for the tire # 1 and 45 mm (1 3/4 of inch) for the tire # 2.

Latest news & Updates :

July 7, 2010 - European patent issued,

July 9 and 12, 2010 - Validation tests "on the road",

Nov. 26, 2010 - French patent issued,

Dec. 21, 2010 - Innovative project eligible for Government subsidies,

July 14, 2011 - Russian Federation patent issued,

Dec. 21, 2011 - People's Rep. of China patent issued,

Aug. 14, 2012 - U.S. patent issued,

Sep. 21, 2012 - Hong-Kong patent issued,

May 16, 2014 - Japan patent issued,

Apr. 28, 2015 - Canadian patent issued,

Jun. 17, 2015 - Interview French magazine «PNEUMATIQUE»
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