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Motorhomes, reading tyre size and other specifications

today's article it can be of help for those motorhome owners who use their vehicle sporadically. In this regard, one should be careful, even though the expiry date is not vital, we have to remind that no tyre can go beyond 10 years, even if it has not been used.
Repeatedly, tyres that are being purchased on-line or "special bargains" may have several years since they have been manufactured; therefore, we must emphasize the importance of the manufacturing date before buying. For example, if the vehicle is used sporadically and you buy a tyre in 2014 it would be convenient to acquire it with a manufacturing date of (approximately) 2013. On the other hand, for a vehicle covering high mileage every year, it would not matter if the tyre had 2 or 3 years when is fitted, since it would be used before its deterioration. 
The reality is that many motorhomers do low yearly mileage; for that reason, in order to avoid unnecessary setbacks or risk of accident, it pays to be alert when fitting new tyres.



185
Indicates the nominal section width of the tyre in mllimetres
55
indicates its aspect ratio, a comparison of the tyre's section height with its section width (65 indicates the height is 65% of its width).
R15
R indicates radial ply construction; 15 indicates the nominal diameter of the wheel rim (15 inches).
81
Is a symbol indicating the maximum load capacity at which the tyre can be safely operated, subject to the tyre being in sound condition, correctly fitted, and with recommended inflation pressures (95 represents a maximum load of 690kg per tyre).
H
Represents a maximun speed of 210 km/h.
The above system has been established since the year 2000.

Load and speed index table