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2007 pegaso trail just fitted a pair of continintal trail attack tyres front end feels very light and the bike has a slight weave at any speed plus the bars have a slight wobble as well tyres are balanced correctly as i took it back to get it checked any suggestions thanks
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Find the recommended pressure for the brand of tyres fitted to your bike in that brand's tyre application catalogue - these are often slightly different to the pressures with the original tyres.
Check first your tyre pressures are correct. Check tyres are fitted facing the right way round, they normally have arrows showing direction of travel. Did you buy the bike like this or what was done prior to this happening? Also check wheel spindle bolts on front and rear wheels are correctly tightened. Also check tyres for ballooning(bulges) and any other damage. Also check the tyres are seated on the rim correctly. This is VERY SERIOUS, DO NOT RIDE the bike without resolving this as it may throw you and your passenger off the bike!!!! If you dont find the problem get professional advice ASAP. Good Luck
A motorbike service is usually:-
air filter,
oil filter,
oil,
spark plugs.
The general condition of the bike should be checked.
Items such as:- Brake pads and discs. Pad thickness, disc condition and security. Steering bearings. Pull both brakes on and rock the bike forward and back. the bike should feel planted and solid. Wheels and tyres. Cuts, bulges. cracking or damage to tyres. Chips, dents or damage Chain and sprockets. Straightness, chain and bolt tightness.
Walk all the way around the bike and make sure it all looks correct.
Hello geoff100lee.... many of the "C's" have a small wobble in the steering at certain speeds...most notable while decelerating... Two considerations that control a front end shimmy are the tightness of the steering head bearing and steering dampers. Since most bikes don't have steering dampers it's EXTREMELY important that the head bearing is properly adjusted. Your dealer is most likely aware of this problem on the "C", even if he won't admit to it. There is a fix for it using tapered needle bearings. The bearings are about 40 buxs, but requires pressing and a few special tools to install. If you search VTXcafe.com or VTXOA.com forums you can find instructions. Good luck...i hope this helps. please rate me a fixya.
A couple of things... are the tyres matched? You said you have changed the rear and the front is worn - this will definitely have an effect on handling, as will tyre pressures. The correct sizes for your tyres are: Front 120/70 ZR-17, Rear 180/55 ZR-17
You should ALWAYS use matched tyres - even differences between models in the same brand will be different and you shouldn't mix and match unless you are an expert - and I mean a real expert - pro racer or similar.
Tyre pressures for your bike are : 36psi front and rear. Unless your tyre manufacturer says different, use that figure. Unless all those things are right, you can't begin to diagnose handling issues.
Good luck!
If you are considering racing in F4 or Buckets on your motoFXR you have a choice of running street tyres (BT39 are great) in the production class or you can fit slicks and run in the Super Bucket class (these are South Island Classes) if you fit slicks on stock FXR rims you need to run tubes inside , the slicks are 95/70-17 fronts and 115/70-17 Rears, same as RS125 GP bikes use, this is not a perfect solution as the rims are slightly narrow and the contact patch on the ground is not optimum.
To get a really nice profile on the tyres you can fit some other rims, my bike has RG200 rims and the tyres fit great, GSXR250 rims are good also they have a 2.5” front and 3.0” rear, there is a wee bit of machining to be done at each end as the front bearings don’t fit the fxr axle and the rear disk has to be moved inwards aprox 10mm.
Usually the slicks we run on F4 or Buckets are used RS125 tyres which are relatively cheap but sometimes hard to find. A 15hp bike doesn’t exactly eat tyres like a 50hp bike so they last for ages, if they are a bit hard you can borrow a grooving tool and cut some groves in the tyre, this makes them heat up more, also it makes you feel better about riding with slicks in the rain
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