Well i think this question is more apt at the What Bike thread. Anyways, comparing P220 with an RTR180 these are the pros and cons that they have:

1. RTR180 is a better handler any given day. Period. If you want a more flickable bike which is fun to negotiate the traffic then RTR wont disappoint you. P220 takes a little more effort in this regard.
2. RTR's initial pickup is equal (or better as some would say although by a very small margin) to that of P220. But i dont think you will be racing with a P220 if you buy an RTR or vice versa that these milliseconds would matter to you. But as the speed builds up, the 40cc extra obviously makes its presence felt and leaves the RTR behind. Having a better top end than RTR, the P220 engine is more relaxed at the same rpm than RTR which is good if you are into touring.
3. Suspension wise, the RTR's suspension is made for the track and hence feels a little stiff on the bad patches of road. P220 DTSI's suspension has been stiffened after DTSFI but still its better on the bad patches and not as good as RTR on the track or even for that matter on the twisties.
4. Looks are relative so i wont go into the debate of which bike looks better.
5. Riding position of the RTR is more on the sportier side than the P220. But its only a matter of getting used to before you feel comfortable.
6. Mileage is something plus minus 40kmph for the RTR, while the P220 DTSI has been known to give a variable mileage for different riders if you go through the P220 DTSI ownership thread.
7. Vibrations are there in the RTR from 4k to around 5.5k which is the speed zone of 55 to 68. P220 on the other hand is almost vibe free till you cross the 6.5k rpm. Now since you will be driving in the city, the RTR's vibe zone will have to experienced more than often as thats the speed we generally ride in cities.
8. Straight line stability of P220 is better compared to RTR.

Now coming down to the reliability, both the companies are reliable in present times. But face it, whatever bike you buy here, you will be facing some or the other problems, be it minor or major. In my city the Bajaj Probiking is much better than the TVS SVC. I dont know about your city. Ask some owners in your city about the SVC.
These were all the differences i could note about the two great bikes. See what you can bear with and what you cannot and then make your choice. Also others in this forum might add to the points i have mentioned. Take note of that too.

^^Power to weight ratio,gearing and throttle response all play major role in drag timings..But there'd be a point in time where the lower cc will run out of steam which is exactly the case here,,

Dent on Acceleration alongwith front sprockets will also needs tobe changed for copping up with loss at the rear.

NO.

The front sproaket need not to be changed, one can shave off tooths from the rear sproaket without changing the front.

And shaving off one tooth from the front has the same affect as shaving off two from the rear.

Areey Renny JI! I was talking about If someone shaves more than required teeths like company provides 40 and one wants 36 teeths then front too needs change.(I maybe wrong, becuz this knoweldge is by my experience).

Right Hands=Renny Am I right!

RTR 180 forum owner has something to say!!

I have heard that Apache sportier riding position can give you back pain, is it true?

As i said earlier, you will get used to it with time and after you are comfortable with it, you might find tall karizma type handlebars making you feel uncomfortable. Yes that happened with me after i tried riding a Karizma. My shoulders were aching.

And i am thinking of replacing the stock tyres of RTR 180 with P220 front and R15's rear Tyre.
Can u suggest me a Tyre with good grip having same size as that of stock one --- 110/80 - 17 other than R15 Zapper S which is 100/80 - 17.

Shave of two tooths from the rear sproaket, you'll have better top speed at each gear at the cost of the acceleration, the bike will also run at lower RPM at the given speed compared to the previous sproaket.

But dont shave off more than two tooths as then it'll put dent on the acceleration.

One question guys??? Is RTR 180 DC or AC?

One question guys??? Is RTR 180 DC or AC?

before 3 months i posted a query in "what bike section " about choosing between rtr180,zma & p220,and most of the xbhpians suggested me to go for zma,i booked a red zma 1 month before,but last week i received a call saying that i want to wait one month more,so dropped the plan and today visited bajaj showroom and tvs showroom to enquire about the p220 and A180
Apart from the performance can u suggest the maintenance of the two bikes,bcoz i cannot spent too much time with ma bike