When you're carrying precious cargo - whether it's parcels or people - you need tyres you can rely on. The Rain Max 2 has special arrow-shaped grooves on its tread, as well as three large circumferential channels, which force water away from the tyre, protecting you from aquaplaning.
The tyre has a completely new tread pattern structure, with an increased number of grooves, to cut through road surface water, and multiple gripping edges. These give you short braking distances on wet and dry roads, as well as improved handling and optimised cornering stability.
The stiff tread ribs and lateral grooves provide an even pressure distribution when the tyre meets the road surface. This reduces friction, giving you grater fuel economy and increases the tyre's long service life.
promobil tested summer tyres for vans and mobile homes. The tyre size tested in 2010 was 235/65 R 16 C. Tyres of this size are typically fitted on Mercedes Sprinter vans and their cousins like the VW Crafter. Corner handling on a wet surface let the Uniroyal Rain Max 2 demonstrate what a real rain tyre is made of: the Sprinter simply shot through the water section at 82 km/h with a lateral acceleration of 4.15 m/s².
Tyres with high wet grip performance (A or B graded) have shorter braking distances on wet roads and are, therefore, safer in the rain. As with fuel efficiency, the D grade isn’t used and there are no plans to use G.
Tyres account for up to 20% of your vehicle’s fuel consumption so, if you want to get more miles per tank of fuel, you should choose tyres with a high fuel efficiency rating. You will also lower your CO2 emissions. It comes down to rolling resistance i.e. the energy lost when a tyre is moving. The lower the rolling resistance, the less energy is lost and the lower your fuel consumption and CO2 emissions. The difference between an A-rated tyre and a G-rated tyre could be as much as 6 litres per 625 miles.
This is the external noise made by the tyre and is measured in decibels. The more filled bars shown on the label, the louder the tyres.