Quote:
Originally Posted by miltonarity1212
All I can say is that one of the primary reasons that there is a gaps in wheels is cooling for the brakes which generate a lot of heat under braking (especially when at high speeds on the motorway etc) and then without proper vent can cause the discs to warp and a damage and reduce the braking effectiveness (and fail motoring tests like the MOT in the UK) and will increase you maintenance costs.
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The ventilation is not a problem as experienced hypermilers hardly ever use their brakes. it is much more efficient to turn the engine off and coast to a stop to the point where when we use our brakes we're only going 10mph otherwise the brakes only get used in emergency situations. The ventilation is a problem to normal drivers as they tend to speed up and then stomp on the brakes such as city driving where we might not even reach the speed limit as other drivers meet and exceed the limit only to brake hard