Uniroyal new rang for merge
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TAKEOVER plans by German tyre company, C tinental, have not affected Introduction of a new ct mercial vehicle tyre ram from Uniroyal.
The R40 was developed itially for front axle fitmE The wide flat tread, betwi 12 to 15 per cent wider ti the company's stand monopoly type, resists t: wear in the shoulder area.
The increased tread wi has been achieved with< change in the cross-sectio width.
The R40 tyre is bowel recommended for all axl The larger contact area claimed to reduce wear a give an improved braki capability. The flat tread p file was chieved by altering carcass line to accept a wi< shoulder profile using wide I breaker plies under the trea The carcass line was co puter-designed, reducing 1 high temperatures norma generated with flat tre patterns.
In bedding the breaker er in a highly elastic cushioni compound combined with tread pattern design whi allows maximum cooling the shoulder area. Uniroâ– claims to have succeeded keeping the runnning temp ature at the same level as ti of a normal narrower tyre.
Uniroyal has developed own tread pattern. The R has five ribs and four draina channels.
A wide centre rib is includ to give the vehicle straig ahead stability while the ri either side help to reduce t wear at the shoulders. T outer ribs are undercut so ti the movement of the side w are not transferred to t tread. Deep notches in t shoulder assist cooling.
Four drainage grooves all( for the dispersion of road si face water. Tests made at U1 royal proving ground France and the USA show eight per cent improvement other makes of steel radial r tyres.