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Discussion Starter #1
Just curious if anybody has switched to a 70 series front tire? Is there any fender rub or anything else that needs to be done?

Aside from being easier to get, I would think the contact patch is slightly larger, so why wouldn't you want a 70 up front?

How about the 190/55 in the rear for the sake of contact patch? Would it even fit on the Brutale seeing as how the exhaust comes so close to the tire?

I need new tires here soon and I see some dece packages online for 190/50 and 120/70 sets...
 

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Used a 70 on my F4 and it rubbed very slightly on the plastic rad guard on trackdays only, and felt much more "planted" ... recomened mod.... :)
 

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I've run 70's for the past few years. I cut out a small "bridge" out of Alum.

Although there is enough room for the tire without the bridge...every rock in the world grinds your front fender.

Here's what I did. Simple to make. Use only on the front connections to the fender. No problem with the rear.
 

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Discussion Starter #4
So when you say bridge, are the holes 1/2 inch apart? I guess I'm not quite getting what is done...a pic of your set-up would be nice though....
 

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IMHO a 70 is much better, mine with the 65 would howl the front tyre on corner entry if I was slightly too quick, the 70 is better in this respect.

You need to ask the question "which will fit" under the std mudguard, there was a list of these on I think the old MV agusta f4 board, which has now gone. A Pirelli Diablo will fit, I don't think Dunlops will though
 

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Discussion Starter #7
^ I know Michelins will, I remember seeing that thread somewhere. I can't remember is Pilot Powers will though.

Eitherway, that little spacer/bridge thing would help eitherway...
 

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Here is some info i got off the yahoo site.

Wednesday, September 07, 2005
Tire selection and fitment for 120/65 and 120/70
Thank you to: Mike Tiltson, Andy Ruhl, et al

Although it was officially suggested that no 120/70/17 tires be fitted to 750cc models, which came standard with hard to find 120/65/17 rubber, the factory chose to increase rake by .5deg on the 1000cc to allow for more commercial tire selection by owners. The reasoning behind this size restriction is contact of the front tire to the radiator(s) under heavy braking or bumps causing damage. Owners have found however that there are a few safe choices to be had in the easy to find and popularly sized 120/70/17 size while others prefer to stay with the original 120/65/17 - pick your poison, so to speak.

RED = Track focused

Here are 120/70 tires known to fit F4 750:
Dunlop D208GP
Metzeler Rennsport
Metzeler Racetech
Michelin Pilot Power **NOTE for Brutale only, contacts front fender - use 120/65 or spacer
Pirelli Supercorsa
Pirelli Diablo
Pirelli Diablo Corsa

Here are 120/70 tires known to NOT fit F4 750:
Michelin Pilot Sport
Dunlop D207RR
Continental Attack

Tires that are known to come in a 120/65 size:
Dunlop D207RR (no longer available - NLA)
Michelin Pilot Sport (NLA)
Michelin Pilot Power
Pirelli Dragon Corsa (NLA)
Pirelli Diablo Corsa
Dunlop D207ZR
Bridgestone BT010
Bridgestone BT019
Metzeler Sportec M-1



Important with the above considerations are the actual tire size vs the sidewall number. Not all 120/65 or 120/70 tires are the same actual size in mm. One method is to measure the actual height change from your old/current setting first, from axle to ground for example, then measure the new tire's actual height from the same location once installed. Make suspension changes as appropriate; for example moving from a 120/65 tire to a taller (in actual mm) 120/70 may require you drop the front height by a corresponding number of mm. Balance the rear ride height to accommodate the front's change to maintain proper geometry.
 

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The source of that is here:

http://mvfaq.blogspot.com/2005/09/tire-selection-and-fitment-for-12065.html



Much of that info, as is often the case, came from yahoo and some from mvf4 or my tech specs research when writing it. Many of us tried to keep track of ACTUAL diameter of the tires for a while but I think we have a pretty good list of what works at this point.


This doesn't answer the question of 'which is better' and that was intentional. Give them a try to find out for yourself I guess is the best answer, Nate. Brutale's are a bit more flexible with regard to fit so you are in better shape there. What isn't the same is 'feel'. It seems many people prefer the feel of the /70.
 

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Discussion Starter #10
There it is...I knew I saw those somewhere.

Of course, for the Pilots (the tires I wanted) the 70 doesn't fit on the Brutale (without a spacer) like every other tire does :laughing:
 

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oicdn said:
There it is...I knew I saw those somewhere.

Of course, for the Pilots (the tires I wanted) the 70 doesn't fit on the Brutale (without a spacer) like every other tire does :laughing:

Jon's fender spacer is what people had to do in the 'old days'. Can a local shop fab a bit of Alu or perhaps some quick dremel milling from Alu stock at home depot for the less tech approach?

BTW I prefer 120/65 and 180/55 on my F4 but I tried to keep my opinion out of the faq. Mike is the opposite..Pete, I can't remember now but think it was the /70.
 

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you guys with the 750's, the head insert is different from the 1k bikes. mv made some minor adjustments to the rake/trail when they went to the 70 front.

i take it that you keep your original insert when you switch to the 70 tire?

btw, i doubt i'll ever go to a 60 or 65. there are very few race tire choices in those sizes.

alex
 

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I have run two sets of 70 pilot powers on my 04 brutale with out a problem. The tyre clearance is reduced to about 2-3mm which also looks trick. no rubbing ever evident, however rocks do tend to get wedged occasionally but are quickly spat out.
Definately prefer the feel of the 70
 

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I know this is old news but moving over to Pilot Powers from Sports was an amazing experience. My riding went up from piss poor to poor in hours. The quantum leap was actually unbelievable! I felt the rear hanging so hard that railing the mountains of Palomar, CA was a breeze. All the riders in my group noticed the transformation. The new 120/70 did not stuff the front into tight turns and also guided the Brutale out of turns with a straighter line.

If anyone has Sports, get them off the bike and go with Powers or Qualifiers or any well known good rubber.
 

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tire report

Today I replaced both front and rear tires with Dunlop GP208's. Yes the front tire is a 120/70ZR17.

I took the bike on a 70-mile test comprised of some agressive riding and twisties.

The handling is way better, and the front wheel feels a lot more responsive during cornering. The front fender clearance is extremely tight and the tire rubs a hair, especially if it picks up any debris (very likely when hot).

In my opinion, the handling benefits far outweigh the fender issue. Will continue to report. :conveyer:
 

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The D208GP front in 120/70 rubs my fender. I can't even get the wheel on unless I take the front screws out of the fender. What I did to run it was I just put the screws back in the holes, and let the fender ride on top of the screws. I have the fender held in place with safety wire. It's been like that for, oh, 4 years or so now?

I near the newer bikes have more clearance, and the 1000cc bikes surely do because they come with /70 tires. And not all 120/70 tires are the same size. The Dunlops are known to be pretty big.
 

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Once again reviving an older thread. The track bike(01 750) is nearing completion and I am awaiting the bodywork to be returned from the painter.
I have outfitted it with Michelin Power Race (120/70 & 190/55) tires and I am looking at ordering a few more sets for the coming track days. My concern is whether to stick with the 190 rear that I was familiar with on the RSVR or switch to a 180/55 on the MV. My thinking is that the MV is probably set up better for a 180 and doesn't have that torque coming out of the corners that the RSVR had and the contact patch isn't quite as important.
Anybody out there run both sizes that has formulated an opinion?

The hp is far less then you guys on the liter bikes are making, after the installation of a power commander it was at 112.5 RWHP on the dyno.

Would welcome all opinions but especially those that have tried both on a 750.

Thanks
 
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