I need to replace the rear tire on my 1973 tx500. The tire that is on it now is a Bridgestone Super Speed 4.00H-18. May I replace it with a 11090H-18, or 12090H-18 size tire, are they wider than the 4.00H-18. What is the best brand and size to use to replace it with? Thanks

I need to replace the rear tire on my 1973 tx500. The tire that is on it now is a Bridgestone Super Speed 4.00H-18. May I replace it with a 11090H-18, or 12090H-18 size tire, are they wider than the 4.00H-18. What is the best brand and size to use to replace it with? Thanks

can't go wrong with the bridgestone BT-45

check here for tyre size conversion

I need to replace the rear tire on my 1973 tx500. The tire that is on it now is a Bridgestone Super Speed 4.00H-18. May I replace it with a 11090H-18, or 12090H-18 size tire, are they wider than the 4.00H-18. What is the best brand and size to use to replace it with? Thanks

I replaced the 400-18 on the back of my XS500 with a Shinko 712 110-90-18. Its plenty wide enough for the skinny rim, looks like a good tire, turns true, balanced well,its a much rounder profile than the old tire. only $42 from bike bandit.com

I'm glad I didn't go for the 120 90 18 instead.

a 120 is too big, 110 is a little big, but acceptable. The wider the tyre the slower it makes the steering.

BT45s work really well on 70's Yams, they calmed my XS650 right down.