Nitrogen Tire Fills Effective but Expensive

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Fill­ing vehi­cle tires with pure nitro­gen offers advan­tage of main­tain­ing more con­sis­tent pres­sure com­pared with using com­pressed ambi­ent air. Added expense for com­mer­cial fill of $3–5 or even $10 per tire may negate cost ben­e­fits for most dri­vers.