Hi guys, let me share my experience with changing to rims that have centre-bore that is too small for the Inspira. It was hard to find much info online so I hope this will help anyone looking to change their ugly 16" rims for something else from other cars. I got my rims for RM 600, which was why it was worth the trouble.

First, a pic of my new rims:


If you're looking for second hand OEM rims you need to check the following:
diameter, width, bolt pattern, offset, centre-bore diameter

The Inspira 16" rim uses: 16" diameter, 6.5" wide, 5x114.3 mm bolt pattern, 45 mm offset and 67 mm centre bore diameter.

Centre-bore diameter is the size of the hole in the middle of the rim. A stud/cone in the hub will match into this hole to keep the wheel centred. If the wheel's bore is too big, the fit will be loose and the wheel may become lopsided. And if the wheel's hole is too small, it wouldn't fit on the hub.

If the wheel's bore is bigger than 67 mm, this is no problem. Wheel and tyre shops can provide you with a set of rings to make both fit. For example, a rim with a 70 mm hole will need an adapter ring that is 70 mm with a 67 mm hole, so that it will fit in between the stud and the rim to keep things steady. No big deal. After market rims usually have large centre bores so that an adapter ring can be used for any car.

If the wheel's bore is smaller than 67 mm, then the problem is bigger. This is especially if it's an OEM rim, as they are made to match. The Inspira's centre bore is one of the largest in the sedan market- not many nice OEM rims will fit. You will need to check if the "new" rim can be cut so that the hole is enlarged. In my case, the Honda rims have a centre bore of 64 mm, so I had to enlarge the hole diameter by 3 mm.

I already had my eyes on the Honda rims, so I checked for photos of this rim's back side to figure out if there's sufficient metal to cut safely. Fortunately, it was quite generous so I purchased the rims and and took them to Wan Sing Sportrims Services in Sungai Besi. They used a large lathe to cut a perfect 67 mm hole. Costs RM 30 for a set of 4 rims.

Everything fits properly now. The wheels fit on nicely and are centred properly.

So lets say you're tired of your 16" rims. You look around on mudah.my and see a set of rims from another car, maybe the Kia Forte. It is 17"x 7" with 5x114.3 mm bolt pattern and 50 mm offset. But practically no one lists the centre-bore size. So you need to look for online directories to figure out the Kia Forte centre-bolt size. In this case, the centre bore is 67 mm, so you CAN use a kia forte rim without modifications. Good.

If you have the hots for a set of Toyota Estima rims, well they are 60 mm centre bore, so you definitely need to check if you can cut out an additional 3.5 mm of material to make the diameter 67 mm. It's absurdly hard to find rear images of wheel rims online (who takes pics of that!), so you might need to see the real thing before deciding if you dare cut them.

Due to the high cost of pretty honda civic rims (usually RM 800 and more) and the wrong centre-bore size, I'm pretty sure mine is the only Inspira on these rims

What, that's amazing! Where/ when did you see the post? I also want to see, see where I was spotted (make sure it was not at inappropriate places hehe)

Yeah that's me
I was there for the taekwondo competition over the weekend.

Yeah that's me
I was there for the taekwondo competition over the weekend.

I drive a 1.8 manual too.

1.) No point asking this: if you want a manual, 1.8 is the only choice hah!

2.) One tank of petrol is about 50L, if you wait for the orange light to warn you. Actual tank size is 59L. For myself, I drive a lot on highways (subang to Sungai Besi- federal highway or NPE) with some congestion. My long term fuel consumption is about 12.5 km/L (one tank of 50L, RM 105 can travel 650 km). My normal driving speed is about 100 to 120. Except in congested areas, of course.



If i drive at about 80 km/h all the way, like a good day on the Federal Highway, the car can hit 15 km/L easy (this is measured by the trip computer, which I believe is quite accurate).

3.) I have not driven manual Myvi or Iswara before. I think the Inspira clutch feels less direct (maybe because it is a hydraulic clutch instead of cable operated). It takes a while to get used to where the cluch bites and releases- you don't feel it so well through the pedal.

I think this is no big deal. After 3 days in the car you'd get used to your clutch's bite point anyway.

1.) I think not worth the trouble to top up less in the tank. My reasoning is like this:
If you top up only half tank every time, you save carrying around 21 kg for half the time, so can average the savings out to be the same as removing 10 kg from your car all the time.
The Inspira's dry weight is 1300 kg (probably 1400 kg after filled up with all the required fluids and driver). 10 kg weight saving is 0.7% weight saving. This will reduce the energy used to accelerate the car by 0.7% (however, energy required to overcome aerodynamic drag will remain the same).
For a REALLY bad case where the driver is always caught in start-stop traffic (where much of the energy is spent accelerating the car and idling the engine), I simply assume that 1/3 of the engine's fuel consumption is for accelerating, and the other 2/3 is for idling, air cond, alternator, power steering pump, the energy saving will be about 0.24% due to reduction in weight.*
For a fuel consumption of 0.1L/km (10 km/L), an improvement of 0.24% means that the consumption is now 0.09976 L/km (10.024 km/L). For your tank of 30 L, this translates to an additional range of 0.024 km/L* 21L = 0.72 km = 720 m.
I guess most people will need to make a 700 m detour just to pump petrol (unless your regular station is very near your normal route). Not to mention the costs in terms of time, additional fuel used (need to start/stop the engine one more time).

* honestly, I suspect that the ratio will be even worse than 1/3 and 2/3 but it will take too much work to get an estimate.

Even washing your car one time less (0.5 hour if you do it yourself, or RM 10 if you pay someone to do it) will save you more money/ resources.
Man, that was an unnecessarily long analysis...


2.) To be honest, I don't know what oil I'm using. Never considered it. I just ask my SC to upgrade to fully synthetic. I think it's a Shell product. I should find out more...


3.) FC at 80km/h can reach 15 km/L if it's smooth and 80 with very little change in speed. Either it's a clear road and you're very disciplined (haha!) or the traffic is all moving smoothly in unity like water in a hose.


4.) On the clutch, I think i didn't stall it after 3 days, but the shifts took a few more days to get OK. I stalled the car twice after collecting it and travelling in start-stop kind of jam in KL. I think I learned where to hold the clutch (in terms of knowing how deep my foot need to press the pedal) for it to bite- that helped smooth out the shifts. I think I do it easier because my left foot is quite sensitive- I use left foot for the brake when I'm driving an automatic car. This is my party trick - when i drive any auto car, I automatically drive with right foot on the throttle and left foot on the brake. However, I don't dare practice it in a manual car like the rally drivers (using right for brake and throttle, and left for clutch and brake)- I have confused between clutch and brake before, and it's f***ing risky to make that mistake on public roads.