Road Cycling - Wider tyres for TREK 1000 - possible ?

Like 700x35c or wider. (up tp 38c)

Help please, I want to know it I should buy the TREK1000
bc, in my area there are lots of bad roads that requiere thicker tyres like 32c or 35c.
Is the TREK road fork can take these tyres ,
Would I have problems with the brakes ?

The fork shouldn't limit tire size as much as the type of brakes. You might have to switch to a different type of brake caliper to get the tire through the pads when changing or repairing. You might be able to e-mail Trek and find out what the maximum tire size would be for that model, and they might recommend the proper manufacturers brakes.
A quick eyeball of my rear tire brake area with a tape measure looks like you could fit maybe a 28mm tire in there, but it's not an accurate measurement.

I think the short answer is no without expensive upgrades. You need to consider another bike if you want to run 35c tires. There are 2 things to consider with tire width: can the tire fit the rim, and second, is there enough brake and fork clearance. I checked the Trek website and the 2004 Trek 1000 has Alex AT450 rims. Those have a 13.5mm interior width and an 17.5mm exterior width. According to Sheldon Brown's tire/rim chart, the maximum tire is approximately 28c for that rim. Tire width do vary by manufacturer, Continentals tend to run smaller, Michelins are bigger. I would recommend a hybrid for upright riding or if you want traditional road, then a Trek Touring 520. The 520 has been around for years. The best touring tire is the Continental Top Tour in 32c or 37c. There are guys would put 8-10k miles on these tire before replacement.

I had a 2003 Trek 1000 for awhile. I had trouble getting 700x25 tires to fit through the open brake calipers. I doubt you could get even 700x28s in there without a major struggle.

I do have a Trek 520 now, and it will take 700x35s easily with room for fenders, too.

Thanx alot, you all are very helpful.
Now I don't if I should buy the TREK1000 or the
520.I read some reviews about the 520 they say they are very comfortable but heavy. How much heavier are they ? much slower acceleration ?

Thanx alot, you all are very helpful.
Now I don't if I should buy the TREK1000 or the
520.I read some reviews about the 520 they say they are very comfortable but heavy. How much heavier are they ? much slower acceleration ?

What type of riding do you plan on doing? Are you looking to actually race, fitness, tours? This info would help.

In general, if you are not going to enter races, you might be better off being comfortable. The performance gains between the two bikes (1000 vs. 520) would be minimal. The 520 has more "quality" than the 1000.

You should also check out the "C" (comfort) Trek series.

Hope tis helps,

ehenz

Im into training.I want to do some touring too.
I think I can't race, bc I just started a coupleof month ago with my old MTB after many years I didn't ride.(Im 28 yo).
I think I made great improvement,I can ride 60 miles in one go,I can do 30 miles in about 2 hours with going up and down a hill of 1400ft in the way.
(the first time I tried to climb that hill I could not do it
not even in 1st gear!!!).
Anyway I still don't know what I should get.
the 520 looks perfect for me .right ?

Im into training.I want to do some touring too.
I think I can't race, bc I just started a coupleof month ago with my old MTB after many years I didn't ride.(Im 28 yo).
I think I made great improvement,I can ride 60 miles in one go,I can do 30 miles in about 2 hours with going up and down a hill of 1400ft in the way.
(the first time I tried to climb that hill I could not do it
not even in 1st gear!!!).
Anyway I still don't know what I should get.
the 520 looks perfect for me .right ?

Looks like you are in pretty good shape for a beginer.

If you want versatility (fitness rides, touring, day trips, non-competitive centuries, commuting) the 520 may be it. But also look at the Specialized Sequoia, Felt Bikes SR series (if you like flat bars), or any of the other major manufactures. Test ride as many bikes as you can, ask lots of questions at your LBS, then check back here for any follow up questions before you buy.

Once again, if the bike is not comfortable you will not ride it - test ride, test ride, test ride!!!!!!!!

BTW: If you only ride on pavement and not under heavy load, 700x23 is all you need. Bigger tires make you slower. Plus, if you do go off road you still have the mountain bike.

Ronyex - I suspect you don't need 35c tires. They are generally used for heavy touring with panniers or large tandems. Bottomline, any bike running 35c tires is going to be heavier than a bike with 25c tires. You need heavier rims, etc. to run a wheel that wide plus you will get more road resistance. I average 3,000 miles a year with light gear commuting on city streets, potholes, etc. and use the Continental Gatorskin 28c with 32H Mavic MA3 rims. The tires look and feel more like a 25c, Continental tires run narrow. I keep the pressure around 105 psi and have minimal problems throughout the year. Keeping your tires at the right psi on each ride is worth more than the width of your tire.

i have a 520, its a REALY comfortable bike. i totaly recomend that bike. I am also thinking of entering a race lol. i know ill get my glute handed over to me on a plater, but meh.