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Larger tires on a Trek 400

Old 04-19-20, 02:20 PM
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RH Clark
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Larger tires on a Trek 400

I picked up a Made In USA True Temper steel frame Trek 400 at a local thrift shop for $20. It's pretty cool with an elliptical up front and Deore rear derailleur with indexed down tube shifters. I have ridden it and it's a blast but tires are bad rotten. I would like to ride some of the forest improved roads with it so want some larger tires than the stock 700X25c tires it has.

It has 15mm height clearance on the rear before the tire is against the brake. Hoping a 700X30c will work and thinking about trying these. https://www.amazon.com/Kenda-Kwick-7.../dp/B0019F582U

Any ideas or experience with this older frame as to whether these would work or maybe something even larger. I know 38mm's are too large.
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Old 04-19-20, 02:37 PM
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RH Clark
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Sorry,I meant to post in the classic ,not appraisals section. I would really appreciate it if a moderator could move it for me.
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Old 04-19-20, 08:06 PM
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tkamd73 
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Well, I have 1988 Trek 400t, and 700 x 28 work perfectly fine, didn’t really want to go any wider with the Campy Omega 19 rims I was using. Looks to me that 700 x 30 would fit OK too though. Got rid of the SR oval tech crank and chainrings, and went with Shimano RX100 triple, also got rid of the Mallard hubs, went with Shimano 6207, and a modern Shimano freewheel, one of my favorite rides now.
Tim



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Old 04-19-20, 08:08 PM
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imakecircles
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I'm running Vittoria Randonneur 32's on my Trek 400 with fenders, which is really tight but works. My 400 is around an '86 or '87 with Reynolds 531, so your results may vary.
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Old 04-19-20, 08:37 PM
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You can go with 28 treaded or nobbies low profile or slicks 32.
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