AE101 FX-GT tyre size

[G-shock]

Hey all,
Just wondering if someone can tell me what the standard tyre size is for a FX-GT AE 101.
Currently its got 205/55/15 which is wider than factory, I need some new tyres and want to compare diameters etc

Cheers

[pidge]

You should find the stock size on the label on your drivers door pillar, near the catch plate.

The alloy-equipped AE101 coupes have a stock size of 195/55R15

The 205 tyre sizes of 205/50R15 and 205/55R15 result in speedo reading 1.6% fast (i.e. you are travelling slower that speed indicated by your speedo) and 1.8% slow respectively.

215/50R15 is a "perfect" fit (speedo reads 0.1% slow)

It's probably better to err on the side of the speed reading fast (i.e. tyres that have a smaller rolling radius), but 0.1% fast is "bugger all"

see http://www.miata.net/garage/tirecalc.html

[Mr Revhead]

ah stock ae101 is 185/60/14

s/s is 15"

[bad20v]

Thats quite an interesting little calculator.

Here's the difference when I changed mine:

Specification - Sidewall - Radius - Diameter - Circumference - Revs/Mile - Difference
195/55-15 - 4.2in - 11.7in - 23.4in - 73.7in - 860 - 0.0%
205/40-17 - 3.2in - 11.7in - 23.5in - 73.7in - 860 - 0.1%

I thought there would be more of a difference between the two sizes but this says there stuff all in it. I guess the real difference would be the 'footprint' of the tyre being larger in size and the lesser sidewall movement that makes it handle better.

[G-shock]

Yeah this has the alloy wheels

I'll check for that plate.

Cheers

[GTCRSHR]

Where would one go to get speedo recalibrated ?

[pidge]

Where would one go to get speedo recalibrated ?

There's a automotive meter place who do it, but their name escapes me at the moment.

If you are picking the right tyre sizes and keeping the rolling radius within 1 or 2%, there's no real need.