we all know what it's like. You want to change wheel's get some bigger flasher or just plain old better wheels on the car and then of course the problems begin. What brand of tyres to get, what wheel size what aspect ratio and of course what width of tyre / wheels combo works with the speedo.
Having been down this road a few times I created a page that gave combinations of tyre widths that suited a criteria as entered. Since I own an MR2 the default was for that but in essence changing the starting values gave you whatever suited and changing the max size you wanted gave you every result in between. No more re-entering details when you realise that perfect speedo match isn't available in your fav tyre brand or just plain old doesn't exist.
The first version worked well but didn't account for having different sized wheels front and rear. So v1.1 was decided on and it took about 2 years to get finished, mainly because I'm crap at programming and also I just had other things to do. However, it's finished now and works nicely, clearly it's not perfect but as a guide it's close enough to not worry about.
Travel now to Tyre size calculator and marvel at how it allows you to get all those tyre and wheel combo's between stock and well whatever you choose. It also gives you the minimum width of alloy that suits the tyre width and aspect ratio, the max is approx 1-1.5" more than minimum but clearly checking the manufacturers website for accurate details is a must.
As an odd twist of fate the page now works in FireFox, Opera and of course IE-whatever whereas before it only worked in IE. Not by planned design this improvement more a forced path of progression due to actually having to write to a (better) coding standard.
2 comments:
Lovely work. Works well. I have only one suggestion, how about a percentage difference on rr?
mm it does show a difference in mph which isn't a percentage but I feel that's more relavent for us that sit at 70mph er Officer..... that's my excuse anyway :-)
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