iQ suspension data

[Paul Prescott]

Hi, I have recently added a 2010 iQ 3 to our Toyota stable, for a bit of club motorsport fun. I tried it out on our club AutoSOLO 3 days after buying it, and it seems to go quite well. I found that the gearing needs to be lowered a little and the grip level improved too. I now have a set of scrubbed PilotSport 3s (ex Ginetta Cup control tyres) in 195/50-15 and need a set of 6x15 alloys to replace the 5x16s, which will be kept for road use.

Sites such as Wheel-size.com (https://www.wheel-size.com/calc/?wheel1=175-60-16X5ET45&wheel2=195-50-15X6ET49&fcl=20mm&wcl=30mm&scl=50mm&sr=0mm) suggest that I need 15s with an ET of close to 50 to maintain a zero scrub radius and keep the outer edge of the tyre under the wing; some used Hyundai I20 rims seem to be the easiest to find. But it would be nice to know what the standard design scrub radius is (along with camber, caster and toe settings). So, my question is what is the factory standard scrub radius and what tolerance either way is acceptable for good handling? Anyone know where this data can be found?

I'm hoping eventually to get a set of coil-overs so I can tweak the ride height and damper settings, and maybe a set of adjustable camber pins for the lower arms, and a strut brace.

Anyone else used an iQ for motorsport?

[davidif]

I'm afraid that I am unable to offer any useful information but I will certainly be following this with interest.

 

 

[flash22]

If you google Scion IQ there is a far bigger modding scene state side with a lot more aftermarket support

Coilover wise BC racing https://eu.bc-racing.co.uk/applications/toyota/toyota-iq/toyota-iq-kgj10ngj10-08-15.html

I will drop you a PM shortly with technical stuff

Fensport - https://www.fensport.co.uk/collections/toyota-iq-1-33-ngj10-07-09

DC performance - https://www.dcperformance.co.uk/