[Guillermo]

I test fit 14" x 7" Team Dynamic Race wheels (that weigh only 11 lbs) with 38 mm offset with 195/55R14 Kumho Victoracers Race compound tires. They fit the insight without rubbing when with the rear splat (wheel cover) installed. They cleared with full steering lock to lock. But they stuck out slightly so because I wasn't able to drive them hard the only concern is that they may rub the top of the front fender under hard cornering.

The 15"x7" rim you are considering has a 43 mm offset so it might rub on the inside.

For the Insight one of the best choices in aftermarket/performance rims are:
9.5 lb 14"x6" 38mm offset Kosei K1 TS for $120 U.S. at tirerack
It even has 2 tire valves so it can never hide under the rear splats

http://www.tirerack.com/wheels/Disp...i&wheelModel=K1+TS&wheelFinish=Silver+Painted

What size tires are you planning on using?

 

[Guillermo]

Insight and civic comes with rims with offsets of 45 mm.
But almost all aftermarket rims made for the civic have a 38mm offset.

Don't buy a 15" rim unless you know exactly which 15" tires would fit.

 

[Guillermo]

15"x7" rims with 43mm ofset SHOULD fit the Insight if you use
195/50R15 or 195/45R15 tires.

The best tires available in those sizes are:
Eagle F1 GS-D3
Toyo T1R