How to correctly adjust motorcycle mirrors

Motorcycle mirrors

Some people don’t think they need motorcycle mirrors because they are going faster than the rest of the traffic.

In fact, in some South East Asian countries where mirrors are mandatory but never used, riders wind them in, facing forwards!

That seems to work in those countries where everyone travels slowly and traffic flows like water. However, in western countries, most motorcycle accidents are rear-enders, so it’s a pretty good idea to make sure your mirrors are adjusted properly.

The actually physical adjustment of mirror arms varies with mirror types. The most common is the two nuts which lock against each other. You will need a spanner or wrench to make the adjustment.

First, set the mirrors in their middle position at the end of the arm, so you have maximum fine-tuning movement when the mirror arms are secured.

Next, loosen off the bolts with the spanner, leaving a gap between the two. If they are chromed, use a piece of paper or rag between the bolt and spanner so it doesn’t scuff the chrome.

Now, sit on your bike in the riding position to adjust the mirrors. If you have a centre stand, use that. If not, get someone to hold you, or put the bike close to a wall and hold the bike vertical with your hand.

It is now time to adjust the mirror arms.

Bikes are different from cars which have wing mirrors and a central mirror. If adjusted correctly, drivers should have complete rear coverage without any blind spots. However, motorcycle mirrors don’t have a central mirror and often have big blind spots, so always do shoulder checks.

Motorcycle mirrors

The best position for your motorcycle mirrors will always be a compromise. You either see what’s behind you, what’s behind and to one side of your bike, or what’s on either side of you, but not what’s behind.

If you are in traffic, you should know what is behind you and what is in the right lane (or left lane in the US) as this is where passing vehicles will appear.

Therefore, my advice is to set your left mirror (right for US) to see what is behind you and set the right mirror for what is in your rear three-quarters vision.

With your mirrors in the correct position, finger-tighten the lower bolt then wind in the outer bolt with your fingers. If you are sure it’s right, you can tighten the outside bolt with a spanner. Don’t over-tighten.

If you don’t have a spanner, you can adjust the mirrors slightly shallower on the left and wider on the right, then just turn the mirror clockwise to the correct position which will tighten the nuts. This can take some trial and error, but it’s do-able.

Adjustment of the mirror on the end of the arm will fine-tune the position.

Always shoulder check before changing lanes or turning, but be especially aware that you will have a blind spot on the left.

If you are riding off road and frequently standing up, tilt your left (right in US) mirror upwards so you can see who’s behind you.

If your mirrors vibrate and all you can see if a blur, buy a thick rubber washer, or get specialised vibration violators from your dealer and fit them between the mirror mount and the mirror bar.

  • How do you set your mirrors? Tell us your tips in the “Leave a reply” section below. 

6 Comments

  1. I know this is a late comment coming months after the article, but it’s a timeless article, so here goes.

    I mainly ride in Sydney traffic but on my bike the mirror arms aren’t quite wide/long enough so I always have my arms filling the inside 25% of the mirror. For $3 at a car accessory place I bought a pair of rotatable, stick-on, circular wide angle mirrors (about 50mm diameter and with an angled back) and stuck them on the inside part of the mirror where all I could was my arms anyway.

    They work brilliantly and show me the next lane from behind me right up to beside me where the car has entered my peripheral vision – I can see his front wheel without turning my head and his back wheel in my mirror. The outer 2/3 of the mirror is still usable to give the normal view and I’ve lost the view of my arms and gained a complete lack of blindspots. They are big enough to see cars in without having to concentrate for seconds at a time. Nothing beats a headcheck but a quick flick of my eyes every few seconds lets me keep aware of whats around me.

    I would now never own a bike without a pair of wide angle stickons on the mirrors.

  2. hey,

    thanks for the tips.
    One thing I wanted to ask, what do you mean by “rear three-quarters vision”?
    thanks for clarifying this.

    1. Hi Don,
      Sorry, I should have explained.
      I mean the blind spot behind and to the side, not directly behind you and not right beside, but in between.
      Does that make more sense.
      Cheers,
      Mark

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