If you\u2019ve spent any time in hilly areas, you\u2019ve probably seen warning signs advising you not to ride your brakes on those lengthy descents. But what\u2019s really going on with your car, and what are the hidden dangers of riding your brakes?<\/span><\/p>\n The Modern Brake<\/strong> System<\/strong><\/span><\/p>\n There are two types of brakes found on today\u2019s passenger vehicles,<\/span> caliper<\/a> <\/strong>and<\/span>\u00a0drum<\/a><\/strong>. The same basic operational principles apply to both: when the brake pedal is pressed, fluid is sent to pressurize a mechanism (caliper or slave cylinder), which in turn squeezes or pushes a friction material (pads or shoes) against a metal component attached to the axle (rotor or drum). When enough pressure is applied, the vehicle slows and\/or stops. A tremendous amount of friction is involved in stopping something as heavy as a moving vehicle, and the biggest byproduct of this process is heat.<\/span><\/p>\n Under normal driving conditions, this heat is able to dissipate as air moves over the rotors or drums, but riding your brakes puts the pads, or shoes, in constant contact with this metal surface. Even if the brakes aren\u2019t fully applied, this constant friction builds heat around the surrounding components without getting a chance to cool down.<\/span><\/p>\n Short<\/strong> Term<\/strong> Risks<\/strong><\/span><\/p>\n The biggest danger of riding your brakes is the possibility of generating so much heat the brake fluid actually boils. The reason fluid is used in the braking system in the first place is that it is in compressible, and thus transfers force directly from your foot. When it boils, however, gas bubbles form in the fluid, and the gas can<\/em> be compressed. Under these conditions, pushing the pedal won\u2019t build pressure in the system, and the brakes will fail. Brake fade can also occur when a large amount of heat causes a chemical reaction with the friction material itself, creating gas bubbles between pads and rotor, and these air pockets can reduce efficiency.<\/span><\/p>\n Long<\/strong> Term Effects<\/strong><\/span><\/p>\n The short term effects of brake fade or all out loss are extremely dangerous. But even if you are lucky enough to avoid this terrifying situation, the long term effects of riding your brakes can create substantial<\/span> maintenance issues<\/a><\/strong>. For starters, the friction material on pads and shoes is meant to wear down over time, but riding the brakes speeds up this process significantly. Over time, the heat buildup discussed earlier can also damage components not meant to handle that sort of stress on a regular basis. Rotors can warp, impacting braking ability and unevenly wearing pads. Non-metallic parts such as caliper seals and dust boots can actually melt, causing leaks.<\/span><\/p>\n What<\/strong> to<\/strong> Do<\/strong><\/span><\/p>\n On long downhill descents, downshift and let engine braking do the work. Yes, even automatics have this option. There are occasionally arguments made that this causes stress on your transmission, but the truth is that it\u2019s not substantial wear and tear beyond what\u2019s expected of a transmission in the first place, and it is most certainly a better move than one that could cause you to lose your brakes. If you still need to use the brakes to slow the vehicle, opt for a punctuated, more forceful brake application instead of keeping your foot lightly on the pedal. This gives them a better chance to cool off.<\/span><\/p>\n For more information on your brakes, chat with a knowledgeable expert at your local<\/span> NAPA AUTO PARTS store<\/a><\/strong>.<\/span><\/p>\n Photo Credit:\u00a0<\/span>Brake<\/a>\u00a0<\/strong>by<\/span>\u00a0Christine und Hagen Graf<\/a>\u00a0<\/strong>(<\/span>CC BY 2.0<\/a><\/strong>).<\/span><\/em><\/p>\n This article has been reproduced with the permission of the copyright holder, National Automotive Parts Association. Further reproduction is prohibited without permission. Click here for more\u00a0<\/i><\/span>automotive tips and stories<\/a><\/i><\/strong>\u00a0from NAPA.<\/i><\/span><\/i><\/p>\n","protected":false},"excerpt":{"rendered":null,"protected":false},"author":98,"featured_media":8740,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[805],"tags":[3056,4152,4580,4592,3492,4578,3494,4586,4590,3496,4584,4583,4579,4596,4597,4598,3497,4594,4588,4581,3491,3037,3026,4582,3495,4591,4587,4585,4595,4589,4593],"class_list":["post-8735","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-classic-tips","tag-automotive-diy","tag-blair-lampe","tag-brake-calipers","tag-brake-fade","tag-brake-fluid","tag-brake-maintenance","tag-brake-pads","tag-brake-pedal","tag-brake-rotors","tag-brake-shoes","tag-braking-on-descents","tag-braking-on-hills","tag-caliper","tag-can-automatics-engine-brake","tag-car-brakes","tag-christine-und-hagen-graf","tag-drum-brakes","tag-engine-braking","tag-how-do-brakes-work","tag-modern-brakes","tag-napa","tag-napa-auto-parts","tag-napa-know-how","tag-riding-your-brakes","tag-rotors","tag-shoes","tag-slave-cylinder","tag-types-of-brakes","tag-warped-rotors","tag-why-is-riding-brakes-bad","tag-worn-brake-pads"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t