Bathroom pipes go from 3/4 to 1/2 inch for total of 8 feet. will I benefit if I convert to 3/4 ?

[bnbhoha]

My house has 38psi water pressure (which is considered average for the city). I've gutted my 2nd floor bathroom and noticed that I have 3/4 copper pipes coming up, but then right from where they come up I have 90 degree where it turns in to 1/2 inch. This 1/2 feeds the sink then continues approx 4feet and goes up another 3.5 feet to feed the shower (total five feet horizontal and then 3.5 vertical).

My understanding is if you're feeding off a pipe, that pipe should be 3/4. I'm never going to use the sink while I'm taking a shower upstairs, so I'm not concerned about using upstairs sink and shower at the same time. However, I was wondering since I have the walls out, would it benefit me at all (flow/pressure) if I replaced the 1/4 pipe all the way to the shower valves and even the sink with 3/4. My water tank is in the basment. I spoke with a couple of plumbers and am getting conflicting info. Thank you.

 

[Flapper]

I do not think it will make any noticeable difference; the shower and faucet have flow restrictors.

 

[Sponsor]

 

[George Maniere]

I once did a bathroom with Newport Brass rain heads and body sprays. Had the plumber run 3/4" home run and client told me it was like a rain forest.
They loved it.
Don't think it makes that much difference to regular use

 

[Dj2]

I assume you have copper. 3/4" is better in your situation, but It really depends on how will you use the shower, whether or not you will use the shower, sink and toilet at the same time (doubt that).