R90/6 rear tire

[rbryson]

I currently have the Continental 4.50 x 18 traditional tire with the parallel grooves (old style tire) but am looking to modernize now that I am down to the wear bars. It seems that the Continental grooves catch on the bridge grates, etc. and cause the bike to not handle well. Is there a 4.50 x 18 tire that is not so affected by road surfaces? Please advise.

[krehmkej]

Correct me if I am mistaken, but isn't 4.00-18 the correct rear for these airheads? In modern tires, there are many good choices from Avon. Bridgestone, Dunlop, Metzeler, and others.

[47512]

400X18, is indeed the correct size, and many makers still make that size. A 110X18 would be closest size. A 400 is alittle taller, a 110 is alittle wider.

Big tires can be a pain to get on and off, plus they can rub on the drive shaft tube.

Ken G.

[rbryson]

Yes 4.00 x 18 is the correct size for the rear tire on the R90/6. Given that, which tire Avon, Bridgestone, etc. is least affected by road surface such as bridge grates that cause the bike to wobble? Please advise.

[rbryson]

Tires are a very boring and subjective topic, hence the lack of feedback that I hoped to get. Anyway, I have decided to go with the Conti Twin again on the rear despite the problem with bridge grate tracking. When the front tires needs replacing I will probably switch to something more conventional, Avon, Bridgestone, etc. Seems that I replace two rears for one front.

[Manfred]

I put Avon RoadRiders on my bike in February and am very satisfied with them in myriad road conditions.

[PMonk]

I tried Continental Blitz tires. They handle really well but didn't get very good mileage out of the rear, 4197 miles to be precise. Some would think that is good but I am not an extremely hard rider. The Blitz front has 2700 miles and still looks good. I replaced rear with a Metz.. Lasertek as I was going to try a pair of them, I worried about the combination but handling is great.

I am going to go with the Avon's Roadrunners next. I like staying with the stock size tires. Measured a 100 Dunlop against my 4.00 Metzler and found the 4.00 tire travels almost 2" more than the metric per revolution

[kheerema]

I can also plug AVON roadriders. Not sure about mileage yet, but performance wise they are great.

I had some tracking issues similar to yours but that was mostly an issue with a bad steering head bearing. The Avon tires are definitley "modernized", however, I'd make sure you don't have a suspension issue before the tires get the blame.