Hawk 250 rear tire replacement

[GoldenBoy1704]

I just got done with a daily ride on my bike and as I was pulling it back into my yard I noticed the worst thing possible for a tire. There's this big nail in my rear tire and as you can imagine the tube is flat.

I have 2 questions, do I need to replace the whole tire or just the tube, and what measurements of both would I need?

[old_airhead]

Tire manufacturer, bike manufacturer, lawyer: Replace the tire.

Me: If the nail hole is small and there is no metal or other debris in it, just replace the tube. If you're not quite comfortable with that, put a patch on the inside of the tire with the new tube. Disclaimer: my advice is not professional and should be taken at your own risk.

[Sport Rider]

just put a new tube in it.

[TxTaoRider]

Pull out whatever caused the leak, clean it good, patch or replace the tube...they're cheap.

[GoldenBoy1704]

Okay, I've settled on getting a new tube and keeping my old tire. Now, I'm looking at some tubes and I have no idea what all these numbers mean. There's 100/110/120 x 18, I'm smart enough to tell that 18 inches is the size rim the tube is supposed to fit on and that 18 inches is for the rear tire, that's as far as my knowledge goes, I'm using the stock rims

[TxTaoRider]

The tubes have allot of sizing leeway. Read the size of your tire and pick a tube that fits, or just take the wheel/tire to your local bike shop and they'll usually sell you the tube and remove and install everything for 40 bux or so. I'm lazy....
They will prob offer you a standard, heavy duty, or ultra heavy duty tube. It's your choice but I'd go with the standard.