Nothing ruins the aesthetic of an otherwise gorgeous car like a cheapjack tint line of work . Worse still is attempt to see   through that ruinously bad streak of house of cards between the windowpane and the translucent violet film that once certified as tint . As you may see above , my old Mustang suffered from this embarrassing affliction .

After years of going without tint , watching   temperature in my carsoar past 130 degreesthis summer was a solid admonisher of how essential it can be . I had literally forgotten what it was like to labour in the summer andnotsweat , so I went to the tinting   pro at3Mto have my car done . I   had a   few confab with them about what differentiate a quality shade Book of Job from a speculative one .   Whether you ’re checking out a used car or have yours touch for the first prison term ,   here ’s what you should know .

Your No. 1 visual clue: good tint has small, clean edges

To assure if a railcar has a quality shade , see how penny-pinching the film comes to the window boundary , and take bank note of how consistent and clean the line is . A top - pass installer use computerized templet that pre - cut the film as much as possible , result in a line that ’s nigh to the boundary of the window pane and does n’t vacillate . As fight to my poor old Mustang , above , where there ’s a significant gap and it seem all - around shitty .

And purple is the enemy

Only one person could properly get away with purple window ( RIP Prince ! ) , but you ’d never have intercourse it pay the enormous numeral of elevator car on the road with tint that has flex purple with eld . It ’s an obvious sign that the film is of the most basic quality possible , a vinyl sheet with dyes that fleet over time .

Look for tiny bubbles that distort your view

Make indisputable you check out how clear your view is . plain huge bubbles are a no - brainer flushed masthead , but even very , very small-scale bubble cause distortion . A good tincture installer will minimize the risk of bubble , but if you ’ve used a downcast - quality tint , they can form as early as six month down the route as the adhesive begins to break down untimely .

Check out the dot matrix

No , I ’m not talking about the space - traveling robot with thebuilt - in virginal alarm . The little dots you see at the edge of many auto windows are 3D , and the rough-textured surface makes tinting super hard . Often you ’ll see picture that sticks to some spots but not others , and the result is a horrendous zigzag - zagging line . Sometimes , an installer will assay to sate the vacuous place with glue so it looks filled in , which might work in the light terminal figure , but is more potential to fail down the road .

A better , but far more sentence - intensive ( read : $ $ $ ) solution is for the installer to take the prison term to sand the dot down . For a machine that ’s already been tinted , what you want to see is an improbably consistent line that move decent to the edge of the dot matrix .

Look for gaps and bubbles around the defroster bars

As with the dot matrix , your rear windowpane ’s deicer is 3D. Any spare disruption where the tincture is hard append to the windowpane will become an fantabulous starting pointedness for bubble to make and expand over time . You need to make trusted the tone is pressed as tightly against the defroster as possible .

High-quality tints aren’t always a dark shade

Do n’t automatically assume that a glowering tone has the good heat - blocking property . While the auto is in the sunshine , put one hand directly in the sun and one hand behind the window , so you’re able to find the difference .   Yes , as a worldwide rule , the morose the tint , the not bad the heat step-down , but a high - quality ceramic tincture likeHuper Optikor a spectrally selective tint like3 M ’s Crystalline lineis more efficient , meaning a lighter shade can still be more effective than a dark wraith of the cheap stuff .

Some dark metallic tints will interfere with your cell reception. Seriously.

A pot of film are made with metallic element – think silver grey or gold , like an ' 80s limousine –   to help reflect sparkle ( and thus wake get-up-and-go ) away from the car . It ’s really extremely effective and for years it was the ( no pun intend ) gold touchstone … but be warned : it does have a tendency to interpose with things like cellphone and radio receipt .

Make sure the windshield is done

It ’s effectual to put avery(almost clear ) light tint on the windshield – but not in every Department of State , soknow your natural law . If it ’s effectual where you live , definitely do it . The windscreen is the largest window on your car – if you tint everything else but leave the windshield bare , it kinda defeats the purpose .   This is where those really high - quality tints that do n’t have to be as colored add up into frolic .

And that it doesn’t have any cutouts

A lot of installers will cut out sections of the film on the windshield for things like your inspection or registration sticker , so that you could remove them when the time amount without damage the film . That ’s unnecessary , and solution in an unsightly course at the edge of the pic . A good install will require placing those stickers ona clear film that fundamentally converts themto atmospheric static - cling decals .

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Bad Tint Job

Aaron Miller/Thrillist

Bad Tint Job

Aaron Miller/Thrillist

Beware the dot matrix

Aaron Miller/Thrillist

Bad Tint Job

Aaron Miller/Thrillist

Good Tint Job

Aaron Miller/Thrillist