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[the_omega_man]

ive noticed that my front tyres are 215/55/r16 but the rear are 225/55/r16 would this cause my car to wander? also rears are bald on the inside

another problem ive got is every so often im getting an error code 0115 engine coolant sensor failed should i be worried

[dbr]

All F1 cars have diff size front to back. they wonder about. However Its more likely something ....bushes are knackered

[cem_devecioglu]

their radius different :-/

[mkirky]

Yes

[mkirky]

Google tyre calculator and put in your sizes and it will give you your radius

[Andy H]

Omegas are prone to trashing front tyres due to too much positive camber (caused by soft wishbone bushes and incorrect alignment) wearing the inside edges.

My guess is that the front camber is out and the tyres that are currently on the back of your car were previously on the front.

I think this FAQ gives all the standard tyre sizes Omega Tyre Pressures

[ffcgary1]

In theory as long as they are the same size on each axel it should not be an issue, but it could be a factor to consider.
Both are std fitment sizes to the omega range so you will need to decide what size tyres you are going to use, then fit all four to the car and then have the suspension checked over to find any faults.
You might find that the car drives fine but this car is almost 2 tons in weight so will almost certainly need bushes to be replaced on the front wishbones. Then a trip to WIM at Chesham to make the final fettling to finish off.

[2woody]

Google tyre calculator and put in your sizes and it will give you your radius

 bet it's wrong....!

for reference, the radii concerned are..... 11.6 and 11.7 inches, which is nothing to worry about.

[cem_devecioglu]

Google tyre calculator and put in your sizes and it will give you your radius

 bet it's wrong....!

for reference, the radii concerned are..... 11.6 and 11.7 inches, which is nothing to worry about.

yep..will have no effect on slow speeds.. but when you are traveling fast enough your brake distance and cornering capabilities will be effected in measurable amounts..