Discussion in 'Tyres & Alloys' started by Andy, Jun 18, 2010.
Thanks buddy much appreciated.
prefer this size
go for 205/65 best size
Isnt 205 overkill on a 14 steel wheels?
I would say 185 is best and 195 to some extent(broad look).
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Does the mrf/bridgestone come in this size ?
@deba - Just don blindly go about calculating, try to find the brand and size balance first.
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The 14" steel rim which now is mounted with 165/80 R 14 will most certainly be too narrow for 205/65. Upsize calculation is not just about width and profile. Please read the tyres and wheels section in the car bibles.
185 / 70 /14 is pretty much the ideal combo on stock rims. Go for it. This setup is biased towards comfort and since we don't drive on Autobahns, comfortable tyres are the need of the hour.
Change all 4 in one go.
Well Calculation Is pretty much imp ,the speed,average,kms totally depends upon tyres. If you have more then +/-2 you would not see the perfrect avg,speed and kms.well i have give you list just see to it and choose size according to it .it should not exceed +2 or -2 .Try to get close to 0
@Moksh - We all agree that calculation is very important, but that is just one factor.
Right now, the size is 165/80 R14. You have recommended 205/65 R14, based on these calculations, since the difference is 0.4%. Then why not 175/75 R14? That is only 0.24%, right?
The present size is 165/80 R14.
The recommended rim width for this size is 4.5 inches to 6 inches.
Let us look at 205/65 R14.
The recommended rim width for this size is 5.5 inches to 7 inches.
Assuming that the current rim width is 6 inches (suitable for both), there is still a risk. A rim that is too narrow in relation to the tyre width will allow the tyre to distort excessively sideways under fast cornering. On the other hand, unduly wide rims on an ordinary car tend to give rather a harsh ride because the side walls have not got enough curvature to make them flex over bumps and potholes. That's why there is a range of rim sizes for each tyre size.
Also, there is the issue of wheel well clearance. The tyre size you have recommended will definitely rub against the wheel well / suspension when cornering. While calculation of the difference in rolling radius and keeping it less than 2% is important, all we are trying to communicate is that there are other equally important factors. I have mentioned some of them above.
Rule of thumb - Increase rim size by 1 inch, width by 20 mm and reduce profile by 10%. In this case, that would mean 185/70 R15, the difference being 0.31 %. If only this calculation was the deciding factor, one could get away with 335/40 R14 as well, considering that the difference is only 0.65%,right?
This is a platform for learning. It is up to you to learn or to argue that you are right till the cows come home. The only person to whom it will make a difference is you.
All aside.....in what brands are 205's available in 14" sizes. All this calculation is waste if you done have a product in that size.
@Moksh - Pls suggest a brand that is selling the size you mentioned above
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Haha! Sat vachan bole ICE guruji converted into Tyre guruji!!
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