Bro, tire size or specs and road noise are 02 different things. They may not be directly related with one another.
Road noise is mostly related to a brand (in general) and then series. Even in a same brand, you can find some series, which are noisy, and some series are very quiet.
Usually, Dunlop and Bridgestone are considered hard and noisy tires (their sidewall is also hard). Michelin, Continental and especially Yokohama, are considered comparatively soft and less noisy tires. Then in Yokohama, there is a series Advan db V552. It is extremely quite series, little to no noise. But at the same time, its wear rate is quite high and is very prone to punctures and damages here in Pakistan, due to road conditions.
In 185/65/R15, Yokohama Advan db V552 is a soft, noiseless and comfortable tire. Bridgestone Ecopia EP150 is a noisy tire; slightly hard too.
IMO, a tire which is hard, will be noisy, but will be reliable, and less prone to punctures and damages. A tire which will be soft, will be quite, but may not be reliable, and may be more prone to punctures and damages.
Tires selection is a personal choice. Its up to the end user, which tires he buys based on his priorities?
You can google about different tires brands, and their series. For examples; let me give you an idea, about noise, wear factor, etc. for different tires brands, and their series:
http://www.tyrereviews.co.uk/Tyre/Yokohama/Advan-dB-V552.htm
http://www.tyrereviews.co.uk/Tyre/Yokohama/BluEarth-Es-ES32.htm
http://www.tyrereviews.co.uk/Tyre/Bridgestone/Ecopia-EP150.htm
http://www.tyrereviews.co.uk/Tyre/Michelin/Energy-XM2.htm
And
http://www.tyrereviews.co.uk/Tyre/Michelin/Energy-Saver.htm
(Please open the links, study for yourself and then analyse and draw some comparison)
Its the tread pattern, manufacturing process, selection of ingredients, raw material / components of tires, purpose of use, etc. which makes tires hard, soft, noisy, quiet, etc.
I hope, it helps. Thank you.
