DNA Off Road

Beadlocks

SecondAir beadlock 17x7-9 rim

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$234.00
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Quick Overview

Will also work with 17x9 rims
Note: If there are no shipping options available for your address, please contact us.

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Details

Green belting with red beading

Note: The 17x7-8 will also work with 17 x 9 wheels. 

With SecondAir beadlocks properly installed you will have many years of trouble free four wheel driving enabling you to travel with confidence knowing your tyres are firmly beadlocked to your rims.

Your tyres real potential will be realised by increasing the tyre footprint from 20-55%.

When driving off road it is usual to lower your 4 wheel drive tyre pressures for 2 reasons:

  1. For comfort & a smoother ride.
  2. To lengthen or enlarge your tyres footprint which will give you greater traction.

 By simply lowering your tyres highway pressure from 38 psi to 14 psi (262 to 96 kpa) you increase your tyres footprint by 37%

This increase in traction enables you to drive to more inaccessible locations. With low pressure, more grip allows you to drive those red clay steep tracks, mould a tyre around a rock or give you greater flotation over mud or sand.

However tyre pressures below 18 psi (124 kpa) run the risk of the tyre either rotating on the wheel rim or worst it allows the tyre to completely deflate and come off the rim. This allows the problem of dirt and mud to enter the inner air chamber or come into contact with the tube (if fitted) thereby damaging the tube or causing resealing tyre bead problems.

This situation is easily overcome by fitting SecondAir™, a new kind of pneumatic beadlock that fits inside the tyre. SecondAir™ holds both tyre beads onto the wheel rim and has a separate low profile tube to inflate the beadlock. An easily installed special valve is fitted to the normal air valve hole to inflate the tyre. Now you have 2 separate air pressures, allowing you to control with confidence the pressure you wish to run in the tyre.

 Customers report that even with zero pressure in the tyre due to a puncture, the tyre stayed in position and full control of the vehicle was maintained. SecondAir™ is an added safety feature to any vehicle. In the event of a high speed blow-out or puncture the SecondAir™ is unaffected and will continue to hold the tyre to the rim. It also gives the tyre some “pneumatic effect” when the tyre sits on the beadlock, cushioning the tyre from the rim minimising tyre damage.

SecondAir™ weighs less then 1.5 kg each and being distributed completely over & around the wheel rim inside the tyre present no problem with wheel balance. Being inside the tyre the SecondAir™ is unaffected by weather or damage by rocky terrain. This feature allows long life for the product.

The beadlock tube pressure can range from 40 psi to 50 psi (275 to 343 kpa) depending on the degree of terrain difficulty or whether used in competition. SecondAir™ can easily be fitted to most 1 piece steel and alloy rims and tubeless tyres.

Tyre pressures to length of footprint

Data taken from test of a B.F.Goodrich 16 x 235 mud terrain tyre fitted to the rear axle of a Range Rover.

Tyre pressure to length of footprint

38 psi   262kpa   9 3/8”      237mm

30 psi   207kpa  10 9/16”   268mm

14 psi   96kpa    12 13/16” 325mm

12 psi   83kpa    13 3/4”     349mm

10 psi   69kpa    14 1/2”     368mm

 

Reduced tyre pressures to % increase of footprint

38 psi -  14 psi   262 - 96 kpa = 37%

30 psi -  14 psi   207 - 96 kpa = 21%

38 psi -  12 psi   262 - 83 kpa = 47%

30 psi -  12 psi   207 - 83 kpa = 30%

38 psi -  10 psi   262 - 69 kpa = 55%

30 psi -  10 psi   207 - 69 kpa = 37%

Cross or bias ply tyres air pressure can be lowered lower than radial ply tyres increasing the footprint even further.

Additional Information

SKU 1778
Manufacturer SecondAir
Item Height No
Item Width No
Item Length No
Item Weight No

DNA Off Road Pty Ltd | Melbourne Australia | Ph 1300 GO2 DNA [1300 462 362]