The Mazda MX-5 based MK Indy RX-5 has a 2363mm wheel base (front to back).
The track of the standard vehicle has slightly different measurements betwen the front and rear if you are using Wilwood 4 pot front brake calipers because you need a 3mm wheel spacer on the front to make sure your Team Dynamics Pro Race 1.2 wheels don't touch the caliper.
Using the standard ET35 7"" wheels with standard front brake calipers, the Indy RX-5 measures 1670mm at the floor including the bulge for the tyres. If you are using the the Wilwood 4 pot front brake calipers, then in reality you can add a futher 3mm each side thus making the width of the front track 1676mm.
If you were trying to fit the Indy RX-5 on a Brian James Minno or a PRG minisporter trailer which has a bed width of 1650mm, then you would need to fit space saver tyres. This would make the track of the front of the Indy RX-5 1580mm on standard calipers, or 1586mm with wilwood front calipers.
Note: The Mazda space saver wheels do clear the Wilwood 4 Pot calipers when used with 3mm wheel spacers.
Narrow Arch Rear
The rear wheel arches on the narrow body are 285mm each making the rear wheel width : 1640 mm
Wide Arch Rear
The rear wheel arches on the wide body are 345mm each making the rear wheel width : 1760mm
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