A long long time ago when this particular shop just started for maybe a year or less, I went to buy used BMW rims for my old ride (E90). The boss didn't seem too interested to sell the used rims as he said it was "owner consignment" and tried to upsell his new rims which I noticed was usually mounted with oversized tyres on customer cars sitting in/outside the shop.
I am personally not a fan of the "flushed wheel fender" look as I think wrong offsets and tyre sizes messes up suspension geometry, not to mention the extra unsprung weight carried by big wheels on typically small engines. Those who know me know that I stick to stock rims and when I bought my E89 Z4 s23i I kept it on stock 17" and it drove very well and returned excellent fuel economy as well.
Anyhow, the boss's less than interested attitude already pissed me off a little. After I insisted I wanted the used rims, he just told his guy to entertain me and he walked off. Sure, I'm not going to buy several thousand dollars of brand new wheels from him now, but if he had actually given me good service, I would have gone back for subsequent tyre changes.
So... since they gave me a less than ideal price for my existing rims, I asked them to take out the fairly new RFT from my existing rims and mount it on my dad's Volvo which uses the same size 225/45/17. The guy who did the work was totally NOT skilled at all as I can see him struggling to unmount the RFTs from my existing rims, and during the process I noticed he had not only scratched my rims (I'm trading it in anyway) but also damaged the sides of one of the tyres.
The staff act blur, and continued to mount the tyres on my dad's Volvo rims without saying a word. He thought I didn't see it... when in fact I saw all of it. True enough, the damaged tyre started losing air pressure within a week, and I had to get a pair replaced. They charged me a nominal fee to unmount+mount the tyres, so I decided there's no point going back to seek redress... how much can he refund me? $50? $60? Or find one piece of the same used tyre for me? Forget it.
After this whole fisaco, I learnt that they started selling BBK and doing wheel alignment. I thought to myself: if they can't even mount wheels, how they can perform an intricate and technical task like a wheel alignment. I think the alignment results speak volumes. Somebody should try asking them technical questions on alignment, such as correcting unusual car behavior and see what the technician says.
Some years back I went to R2D and one of the customers happened to have bought the BBK from this particular shop, and after several unsuccessful visits to resolve a squealing problem, the owner decided to drop by R2D for a second opinion and Rodney said some part of the BBK was assembled incorrectly.
To me it's very simple... you can do my business once and I count myself unlucky, but I will not go back again, and I will tell my friends not to go too. Long term, its his loss.
I personally visit a few shops for tyres. One is Tyre Track & Accessories Trading in Yishun, and another is Beng Heng Tyres in Toh Guan. Both of them gave me excellent service and very good pricing for tyres.
For alignment, I go to either Kian Teong Auto in Sin Ming or Kenny Wheel Alignment in AMK.
* The shops mentioned above do not constitute disapproval or endorsements by me. They are simply based on my personal experiences. You are advised to make your own judgement.