![]() | #31 |
BHPian Join Date: Dec 2006 Location: Singapore
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![]() | #32 | |
BHPian ![]() Join Date: Sep 2009 Location: Bangalore
Posts: 25
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I am planning to put 195/60/R15 on my Skoda Rapid TDI. Any idea which brand is best for this profile. The guy from whom I am buying the alloys says Yokohama DB V580 are excellent tyres in this profile. Is that true ? Which other brands are are good ? Thanks in advance !! | |
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![]() | #33 |
Distinguished - BHPian ![]() ![]() Join Date: Jul 2006 Location: Bangalore
Posts: 5,150
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| ![]() DB V550 is very good. Availability is a problem. Primacy LC is the best if you ask me. Just that it's priced very high compared to the competition. |
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![]() | #34 | |
BHPian ![]() Join Date: Sep 2009 Location: Bangalore
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Thanks Nikhil. Can the DB V550 take bad roads and last atleast 40K ? Also, between A-drive and DB V550 which is better considering that it will be driven mostly on quite bad roads and once in a month highway driving (again average roads). I don't do cornering or very high speeds. My preference is good ride, less nose and a life of 40K. | |
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![]() | #35 | |
Distinguished - BHPian ![]() ![]() Join Date: Jul 2006 Location: Bangalore
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Between the A drive and the V550, the V550 is a far better tyre in almost every respect. Except the A drive can survive bad roads slightly better. | |
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![]() | #36 | |
BHPian Join Date: Mar 2007 Location: Bangalore
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![]() | #37 |
Senior - BHPian Join Date: Sep 2007 Location: Chennai
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| ![]() I use 32 psi all around in my 195/60/15, and it strikes a good balance between ride and handling. Thud/thunk sound over the speedbreaker/pothole is a charecteristic of the suspension. I thought only the vento had this issue, but looks like rapid has this too. Nothing you can do about it! |
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![]() | #38 | ||
BHPian ![]() Join Date: Nov 2011 Location: Bangalore
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Try 32-front and 29-rear as I've found the rear to be bouncy if I go higher. If not, try 32-all around as Bala suggested - one of the two will work for you. This is for a lightly loaded car (2 people with luggage). For a fully loaded car (4 or 5 people with luggage,), tried various settings including the recommended 36-F, 39-R - but settled into using 34-all round as it gives me a very good feel. Quote:
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![]() | #39 |
BHPian ![]() | ![]() Although I am not using a Rapid but I am using a Vento TDI which we can say is pretty much the same car. Now I replaced the tyres before I got delivery and thanks to the limited choice we have, I chose to go with S Drives because I wanted more grip and handling at the expense of ride a bit and all I can say is I am extremely happy with them. Yes they are a bit noisy but overall pretty satisfactory. Good road holding and not too much compromise on ride quality. Ideally would have preferred PP2 or PS3 but since they weren't available, had to settle for this. BTW I am using 205/55/R15. |
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![]() | #40 | |
BHPian ![]() Join Date: Nov 2011 Location: Bangalore
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So, here's an interesting theory to compliment this >> The contact patch area is the same with a wider or narrow tyre if the weight and tyre pressure is constant In essence, if you upsize your tyre and stick to the same pressures recommended by the manufacturer, you're not really gaining anything because the contact patch remains the same. So you'll need to drop tyre pressures a little bit to increase the contact patch and take advantage of the wider tyre. I thought there should be a logical way to compute this - by how much should the pressures be dropped or increased. And I came across this thread here: Tire Pressure vs Tire size - RX7Club.com The above thread's discussion is based on this principle: http://en.wikipedia.org/wiki/Gas_laws to quote "3.If the number of gas molecules and the temperature remain constant, then the pressure is inversely proportional to the volume" To summarize what the thread above discussed in a nutshell, assuming you've followed all the rules of upsizing by staying within 2% deviation of the stock tyre/wheel; Now compute volume of air between the 2 tyre sizes (stock vs. upsize): If volume of air in upsize is > than stock by x%, then drop pressure also by x% to compensate If volume of air in upsize is < than stock by x%, then increase pressure by x% to compensate I used this link to calculate air volume: TRC Calculator In my case: Vol of 185/60 R15 is 10.1 litres Vol of 205/55 R15 is 11.41 litres So, 205/55 R15 holds 12.97% more air volume than 185/60 R15. Stock pressures for 2 people + light luggage is front-32, rear-29. Going by the logic, I'll need to drop my tyre pressures by 12.97%. Front=32psi - 12.97% = 28psi (approx) Rear=29psi - 12.95% = 25psi (approx) Stock pressures for 4~5 people + full luggage is front-36, rear-39. Going by the logic, I'll need to drop my tyre pressures by 12.97%. Front=36psi - 12.97% = 31psi (approx) Rear=39psi - 12.95% = 34psi (approx) Not sure if this is the right way to go about it, what do you guys think? Last edited by kryptonite : 23rd February 2012 at 10:28. Reason: added wikipedia link for gas laws | |
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![]() | #41 | |
Distinguished - BHPian ![]() ![]() | ![]() Quote:
I don't think you should drop tyre pressures to achieve higher contact patch ( read grip) as drop in air pressure could be dangerous as it increases heat build up due to higher flex in the sidewall. Low pressures will adversely affect handling as well. The Grip is as much a factor of tyre compound as it of tyre width. | |
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![]() | #42 | |
BHPian ![]() Join Date: Nov 2011 Location: Bangalore
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But I had to try out the theory I outlined earlier (for myself of course ![]() So, back to 32-F, 29-R for upto 2 people + luggage; and 34 all-round for 4~5 people + luggage for me! Cheers! | |
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![]() | #43 |
Newbie Join Date: Oct 2010 Location: Bangalore
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| ![]() Hi All, Just booked myself a Skoda Rapid TDI Ambition... Wanted more information on whether i could shod them any of the following options: > 215 rubbers of any kinds or > 16" alloys Thanks, Mahaan |
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![]() | #44 | |
BHPian ![]() | ![]() Quote:
Do let us know what option you went ahead with. Best Regards, D | |
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![]() | #45 |
Senior - BHPian ![]() Join Date: Feb 2005 Location: Chennai
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